Warlock
* Because all of Warlock's abilities are active abilities, silences can make his impact in fights minimal. Be cautious of heroes that carry silences like 
Death Prophet, 
Puck, and the aforementioned 
Silencer.
Void Spirit
* 
Spirit Siphon and 
Exorcism can damage through his 
Resonant Pulse shields.
* 
Silence can prevent Void Spirit escape or contributing much in fights.
Warlock
* Because all of Warlock's abilities are active abilities, silences can make his impact in fights minimal. Be cautious of heroes that carry silences like Death Prophet, Puck, and the aforementioned Silencer.
Void Spirit
* Void Spirit can easily be bursted down by Puck's high magic damage spells in early game.
* Wanning Rift and Dream Coil prevent him from using two of his important mobility abilities: 
Dissimilate and 
Astral Step.
Additional:
* 
Dream Coil prevents the usage of Void Spirit's escape abilities and limits his damage output in fights almost entirely.
* Killing Puck in the late game becomes difficult when they obtain a 
Eul's Scepter of Divinity, 
Blink Dagger, and 
Phase Shift.
Warlock
* With God's Strength, Warlock Golem goes down in a matter of seconds. The two weaker golems granted by 
Aghanim's Scepter will fare worse due to Great Cleave hitting both.
* Storm Hammer upgraded with Aghanim's Scepter dispels 
Shadow Word.
Additional:
* 
God's Strength combined with 
Great Cleave destroys Chaotic Offering golems within seconds.
* 
Warcry gives Sven and his allies armor to help against Warlock's Golem's heavy physical damage and movement speed to help escape Upheaval.
* 
Storm Hammer disrupts Upheaval.
Void Spirit
* Side lanes with disables will greatly reduce the likeliness Void Spirit will be willing to rotate: 
Sven, 
Tiny, 
Wraith King, 
Ogre Magi.
Warlock
* Supports with useful teamfight or contribution spells will be helpless against Doom: 
Dazzle, 
Oracle, 
Warlock.
Void Spirit
* 
Doom is effective against every hero, and Void Spirit is no exception. Being unable to cast spells or items during fights for 16 seconds nullifies his impact entirely.
* Doom has a very versatile build and can consume creeps which has abilities that can stun or provide additional magic resistance.
* Doom's high strength gain and versatility in items can be effective against Void Spirit's magical damage.
Warlock
* 
Ursa can shred Warlock's Golems in a few seconds with 
Fury Swipes and 
Overpower.
Void Spirit
* Heroes with burst damage of their own won't be afraid to go toe to toe with Void Spirit, like Ursa, 
Lifestealer, or 
Axe.
Warlock
* Heroes who rely on summons will see them destroyed easily by Overwhelming Odds: 
Lycan, 
Arc Warden, Warlock, 
Chen
Void Spirit
* Special mention to 
Legion Commander, as she can lock down Void Spirit for a long amount of time without worrying too much about being killed by him during the 
Duel.
Void Spirit
* The brutal physical damage of 
Slithereen Crush and 
Bash of the Deep can quickly remove Void Spirit's shield and stun him for a while.
* 
Corrosive Haze provides vision of Void Spirit while he is running away and 
Guardian Sprint allows Slardar to quickly close the gap
Warlock
* Ghostship helps your team soak up damage from 
Chaotic Offering and hit summons hard.
* Tidebringer clears summons later in the game.
* Most of your spells can interrupt 
Upheaval.
Warlock
* 
Impale and 
Spiked Carapace interrupts Upheaval with ease.
* Warlock's low health pool, mobility, and high intelligence gain makes him a prime target for Nyx Assassin's burst damage.
Void Spirit
* One hit with 
Jinada should be sufficient in removing Void Spirit's shield most of the time.
* 
Track negates much of Void Spirit's escape abilities by revealing his position and prevents him from rotating effectively.
Warlock
* Because Warlock's abilities are all active abilities, Silencer can make his impact minimal.
* 
Arcane Curse prevents Warlock from using his abilities without increasing it's duration, which since all of Warlock's abilities are actives it is very effective against him.
* 
Last Word can prevent Warlock from casting his Fatal Bonds, Chaotic Offering, and Upheaval combo.
* 
Global Silence can nullify Warlock's impact in fights by preventing him from casting Fatal Bonds and Chaotic Offering, or by interrupting his Upheaval.
Warlock
* Weaver's 
Shukuchi allows him to escape from Warlock's Upheaval with high move speed.
* 
Time Lapse allows Weaver to ignore damage from Warlock's Golem and escape.
Void Spirit
* 
Rupture will fully damage Void Spirit during his ultimate, removing his main escape mechanic during fights and his way to disrupt them heavily.
* 
Blood Rite will force Void Spirit to use Dissimilate or Astral Step or be silenced. In the latter's case, it can be dangerous when combined with Rupture.
Void Spirit
* Queen of Pain can 
Blink to both escape and initiate onto Void Spirit.
* She is also a very common 
Orchid Malevolence carrier, which can prevent Void Spirit from contributing much in fights.
Warlock
* Upheaval does not interrupt Slark too much, as he can just Pounce out of the area.
* 
Fatal Bonds and Shadow Word can be dispelled by Dark Pact.
Warlock
* Fragile supports with low armor are always a good prey, also her Psionic Trap will wear down most attempts to flee with their built-in disables: Silencer, 
Crystal Maiden, Warlock, 
Ancient Apparition, 
Grimstroke, 
Witch Doctor
Void Spirit
* 
Refraction negates all of Void Spirit's burst damage.
* 
Meld quickly burns through Resonant Pulse.
Warlock
* Because Templar Assassin does not have escape potential in lane, any support hero with roaming potential and a 
Dust of Appearance can be great at shutting her down early game: 
Earth Spirit, 
Spirit Breaker, 
Tusk, 
Bounty Hunter, 
Riki, Warlock.
Additional:
* Warlock can cast Upheaval when Templar Assassin uses Meld, preventing her from escaping at the right moment.
* Warlock can also send his Warlock Golem near where she used Meld, preventing escape by Blink Dagger due to the Warlock Golem's 
Permanent Immolation.
* Warlock's Golem's Permanent Immolation will burn away Refraction with its damage over time.
Warlock
* Spell Steal can easily stealing from Chaotic Offering is a better position. Build Aghanim's Scepter and 
Octarine Core make cooldown reduction abilities from Rubick and addition instanly Warlock's Golem from Chaotic Offering stollen.
* Telekinesis from Rubick can help stopped from Upheaval chancelled. Telekinesis also stopped from Upheaval with throw creeps and enemy hero touch down to Warlock. Rubick's can build 
Aghanim's Shard save the his allies trapped from Upheaval.
* Upheaval can stollen for Rubick passing positionning area from Upheaval. Alternative, already from Chaotic Offering via Spell steal also possible cancelled from Upheaval with ready build Aghanim's Scepter capable of stealing two abilities from Warlock's.
* Shadow Word stollen for Rubick can very helpful restore health from his allies. Addictionally, for Shadow Word stollen can reduction health from enemy heroes.
* Fatal Bonds makes Rubick simplify fighting from target.
Additional:
* All abilities from Warlock is very vulnearble stealing by Rubick with 
Spell Steal primarily Chaotic Offering.
* Rubick always purchase Aghanim's Scepter will additionally Rubick's instanly Chaotic Offering stolen although Warlock's without purchase Aghanim's Scepter.
* 
Telekinesis can cancelled Upheaval lift up Warlock's and also can cancel from Upheaval with nearby creeps and enemy hero from Telekinesis can throw and touch down to Warlock's. Additionally, Telekinesis can save allies from Upheaval trap will upgrade with Aghanim's Shard.
Void Spirit
* Nukers who have set amounts of damage will really struggle against Lone Druid especially in True Form: Puck, 
Void Spirit, 
Mars.
Warlock
* Warlock is a very strong hero when positioned correctly, and his long cast range helps him with this. However, some Heroes might disrupt or sneakily pass through his allies and deal with him, preventing him from doing his job. Such heroes include 
Chaos Knight, Spirit Breaker, Riki, and more.
Void Spirit
* Side lanes with disables will greatly reduce the likeliness Void Spirit will be willing to rotate: Sven, Tiny, Wraith King, Ogre Magi.
Void Spirit
* Heroes that can purge his slow and disables are very difficult to go on and their team: 
Abaddon, Oracle.
Void Spirit
* Heroes that can purge his slow and disables are very difficult to go on and their team: Abaddon, Oracle.
Warlock
* Heroes with channeling spells are very easy targets for Jakiro's abilities: Crystal Maiden, 
Dawnbreaker, 
Enigma, 
Pudge, 
Shadow Fiend, 
Shadow Shaman, Warlock.
Warlock
* Heroes that have small health pools and little to no escape mechanisms are even easier prey for Necrophos. Ghost Shroud's slow will allow him to catch him with them, and get nuked down with his abilities, even preventing retaliation due to Reaper's Scythe's stun. Such heroes include Crystal Maiden, Witch Doctor, Warlock or Shadow Fiend.
Warlock
* Warlock is a very strong hero when positioned correctly, and his long cast range helps him with this. However, some Heroes might disrupt or sneakily pass through his allies and deal with him, preventing him from doing his job. Such heroes include Chaos Knight, Spirit Breaker, Riki, and more.
Void Spirit
* Heroes who can match Void Spirit's mobility (like the aforementioned 
Ember Spirit or 
Queen of Pain) or tank his spells (
Dragon Knight or 
Centaur Warrunner) are very problematic for him.
Void Spirit
* Side lanes with disables will greatly reduce the likeliness Void Spirit will be willing to rotate: Sven, Tiny, Wraith King, Ogre Magi.
Warlock
* Heroes that rely on summons will suffer against Ion Shell, which kills them very quickly: 
Beastmaster, 
Broodmother, Enigma, 
Nature's Prophet, 
Visage, Warlock, Wraith King.
Additional:
* 
Surge allows for Dark Seer and his allies to escape from Upheaval due to it ignoring any slow.
Void Spirit
* Heroes with burst damage of their own won't be afraid to go toe to toe with Void Spirit, like Ursa, Lifestealer, or Axe.
Void Spirit
* Heroes who can match Void Spirit's mobility (like the aforementioned Ember Spirit or Queen of Pain) or tank his spells (Dragon Knight or Centaur Warrunner) are very problematic for him.
Void Spirit
* Side lanes with disables will greatly reduce the likeliness Void Spirit will be willing to rotate: Sven, Tiny, Wraith King, Ogre Magi.
Warlock
* 
Mana Break prevents Warlock from casting his spells, particularly in the laning phase.
* 
Blink allows Anti-Mage to escape from Upheaval.
* 
Counterspell reduces damage from Shadow Word and Warlock's Golem's Permanent Immolation passive. Additionally, it can reflect Shadow Word and Fatal Bonds.
* 
Mana Void deals heavy damage after Anti-Mage has drained Warlock's large mana pool.
Void Spirit
* Heroes who take a long time to become strong are in for a rough mid game, such as 
Outworld Destroyer, 
Magnus, 
Medusa, and 
Anti-Mage.
Warlock
* 
Shapeshift allows Lycan to escape from Upheaval with maximum movement speed.
* Warlock doesn't have a good solution to deal with Lycan's wolves from 
Summon Wolves.
Void Spirit
* Heroes that can summon units will have their summons destroyed very quickly if badly micro-managed, like Chen, Lycan, and 
Phantom Lancer.
Void Spirit
* 
Fiend's Grip and 
Nightmare are very useful to lock down Void Spirit.
* 
Brain Sap can be difficult for Void Spirit to deal with in the laning stage.
Warlock
* Heroes with illusions and summons can swarm Bane, who has no area abilities outside from Aghanim's Shard upgraded Brain Sap: Broodmother, Chaos Knight, 
Naga Siren, Nature's Prophet, Phantom Lancer, 
Terrorblade, Visage, Warlock, Wraith King.
Void Spirit
* 
Poison Attack makes it hard for Void Spirit to lane against him.
* 
Corrosive Skin reduces the magical damage from Void Spirit's spells.
Warlock
* Viper cannot interrupt heroes with powerful channeling abilities: 
Bane, Enigma, Shadow Shaman, Warlock
Void Spirit
* Wins on the central line, thanks to its strong nukes 
Shadowraze, because of which Void Spirit cannot approach the creeps to farm gold and overtake Shadow Fiend by level
Additional:
* Wins on the central line, thanks to its strong nukes Shadowraze, because of which Void Spirit cannot approach the creeps to farm gold and overtake Shadow Fiend by level
Warlock
* Heroes with channeling spells because Shadow Fiend has nothing to cancel channeling outside of Requiem of Souls: Bane, Enigma, Pudge, Shadow Shaman, Dawnbreaker, Warlock, Crystal Maiden.
Additional:
* Because Shadow Fiend lacks escaping mechanisms, and is dependent on fair positioning for channeling 
Requiem of Souls, it's easier for Warlock with his long range crowd control abilities to lock Shadow Fiend down for his team.
Void Spirit
* 
Lion's instant cast point shuts down his initiation and buys time for his allies to catch up.
* Void Spirit has to be cautious when fighting, as he has no protection against 
Finger of Death. If caught out in a stun, the high magic damage could end him quickly.
Warlock
* While heroes with strong mobility are able to get close or flee from Upheaval, heroes with no escaping abilities or that lack long disables will perish against Warlock. Once the Warlock Golem lands with its stun, its hardly possible to escape when he casts Upheaval. Notable examples: 
Huskar, 
Drow Ranger, Lion, 
Elder Titan, etc.
Warlock
* Warlock has strong counter initiation which reduces Marci's effectiveness throughout the game.
* Fatal Bonds cancels Blink Dagger, which means Marci can move in and out of fights less effectively.
* Chaotic Offering paired with Upheaval provides a ministun, a movement slow and paired with Fatal Bonds has the potential to deal a lot of damage to Marci while she jumps on a target. The ministun also means that Marci will have a harder time casting Rebound. If Warlock does build Aghanim's Scepter and 
Refresher Orb, the physical damage from Golems will overwhelm Marci, especially when played as a support.
Void Spirit
* Heroes that can reliably kite out Dispose, Unleash and dodge Rebound, like Ember Spirit, Void Spirit, 
Storm Spirit, Anti-Mage, 
Faceless Void, Puck or always build items like Blink Dagger and 
Force Staff.
Warlock
* Heroes with both illusions and summons, for Io has nothing to deal with multiple enemies at once outside from Spirits's weak area-of-effect: Beastmaster, Broodmother, Chaos Knight, Lycan, Naga Siren, Nature's Prophet, Phantom Lancer, Shadow Shaman, Terrorblade, Visage, Warlock, Wraith King.
Void Spirit
* Heroes with either magical, physical or pure damage burst: Bane, Ember Spirit, 
Leshrac, 
Lina, 
Luna, 
Nyx Assassin, 
Phantom Assassin, 
Skywrath Mage, 
Tinker, Ursa, Void Spirit.
Warlock
* Illusion and heroes with summons are difficult to kill with Chen's single-target offensive spells: Terrorblade, Phantom Lancer, Chaos Knight, Broodmother, Naga Siren, Lycan, Visage, Beastmaster, Warlock, Wraith King. And even though Chen can convert enemy summons with Holy Persuasion, their much greater numbers will often overwhelm Chen and his creeps.
Void Spirit
* Heroes that can easily bypass Chen's creeps to get to Chen: Riki, Tusk, 
Clinkz, 
Sniper, 
Slark, Phantom Assassin, Void Spirit, Storm Spirit, Ember Spirit, Earth Spirit, Spirit Breaker.
Void Spirit
* Void Spirit can greatly pressure Morphling's farm, which is very bad for a hero who needs a large amount of space.
* 
Waveform does not provide better mobility than Astral Step.
* If Morphling shifted all of his strength to agility, he can be bursted down by Void Spirit before he can react.
* Doing an Ethereal Blade combo on Void Spirit is incredibly difficult, as Dissimilate and Astral Step can allow him to escape or dodge the projectile.
Warlock
* Chaotic Offering's spell immunity piercing stun can stop Black Hole's channeling. Due to this ability's large area of effect, it can be cast at a safe distance from the Black Hole. It also goes through 
Black King Bar and ignores 
Linken's Sphere.
* Fatal Bonds and Aghanim's Shard upgraded Shadow Word can be used to make Enigma's Eidolons easier to kill, potentially feeding the enemy team. Also,their constant damage will put Blink Dagger on cooldown, potentially forcing Enigma to prematurely activate Black King Bar.
Additional:
* Chaotic Offering pierces spell immunity and is an area of effect ability, therefore it doesn't matter if Enigma buys Black King Bar or Linken's Sphere, Warlock will always be able to cancel the channeling of 
Black Hole.
* Enemies often get clumped up around Black Hole to hit your allies, giving you a perfect opportunity to cast Fatal Bonds, Chaotic Offering, and Upheaval on multiple enemies.
Void Spirit
* Keeping Void Spirit inside 
Wukong's Command is a very tricky task, especially in the early and mid game. In addition, if Monkey King is in a bad position, a well placed Aether Remnant can easily pull him out of the ring.
* Getting stacks of 
Jingu Mastery can be difficult when attacking Void Spirit.
Void Spirit
* Void Spirit deals entirely magical damage in the early game, ignoring her evasion from 
Windrun.
* A Void Spirit with fast reaction time can use Dissimilate or Astral Step to dodge 
Powershot.
Additional:
* Void Spirit deals entirely magical damage in the early game, ignoring her evasion from Windrun.
* A Void Spirit with fast reaction time can use Dissimilate or Astral Step to dodge Powershot.
Warlock
* Chaotic Offering's vast area-effect can destroy trees and stun Hoodwink.
* Upheaval makes retreating with 
Scurry difficult.
Void Spirit
* Void Spirit can easily dodge Gyrocopter's {Ability ID:Homing Missile|gyrocopter} with the help of Dissimilate.
* Void Spirit can partly dodge 
Call Down via Dissimilate or move out of its range with Astral Step.
* Gyrocopter has no escape abilities, which benefits Void Spirit's high mobility.
Void Spirit
* A good choice against Invoker, as it has some advantage with the help of abilities.
* With the Dissimilate, Voidspirit can evade Invoker's skills, going to another world where he does not receive damage. The same ability to run away or attack quickly.
* Astral Step moves quickly from point to point, which also reduces the Invoker's probability that he will hit him with skills and cause at least some damage.
Additional:
* A good choice against Invoker, as it has some advantage with the help of abilities.
* With the Dissimilate, Voidspirit can evade Invoker's skills, like 
Chaos Meteor or 
E.M.P., going to another world where he does not receive damage. The same ability to run away or attack quickly.
* Astral Step moves quickly from point to point, which also reduces the Invoker's probability that he will hit him with skills and cause at least some damage.
Void Spirit
* Void Spirit's AoE damage make short work of Broodmother's spiderlings
* Even in she is within the range of her spiderwebs from 
Spin Web Broodmother cannot escape Void Spirit's mobility.
Additional:
* Void Spirit's AoE damage make short work of Broodmother's spiderlings
* Broodmother cannot escape Void Spirit's mobility, even in her webs.
Void Spirit
* Astral Step and Dissimilate makes a quick work of Phantom Lancer's illusions.
* Resonant Pulse helps clear illusions and protects Void Spirit from Phantom Lancer's physical damage and with the Aghanim's Scepter upgrade, it prevents Phantom Lancer from casting his abilities.
* Void's Spirit mobility makes it hard for him to chase down with Phantom Rush.
Warlock
* Warlock Golems do plenty of physical and pure damage to bring down Huskar when he is at low health. Warlock is always a hazard for Huskar to initiate by using 
Life Break, because Chaotic Offering can stun him instantly, even when Black King Bar is activated, and allows Warlock's team to gather their wit and retaliate.
* After using Life Break to jump in, Huskar will not have any means to escape Upheaval. Which since he is an attack-dependent hero, this will nullify his impact in fights.
Void Spirit
* Heroes with abilities that can lock down Terrorblade and prevent him from using Sunder: Bane, 
Batrider, 
Earthshaker, Elder Titan, Faceless Void, 
Invoker, Legion Commander, Mars, 
Primal Beast, Riki, Shadow Shaman, Silencer, 
Vengeful Spirit, Void Spirit.
Additional:
* Void Spirit's high mobility becomes a nuisance to Terrorblade.
* Void Spirit's arsenal of magic damage is effective against Terrorblade's low strength.
* Terrorblade has no disables to prevent Void Spirit from escaping.
Void Spirit
* Heroes with considerable mobility can easily escape from a rolling Pangolier: Anti-Mage, Queen of Pain, Void Spirit, Storm Spirit, Ember Spirit, Earth Spirit, moreover, if a player is familiar with how Rolling Thunder works, they can adjust their movement to avoid it entirely and of course outplay the Pangolier player.
Warlock
* Heroes with illusions and summons can be hard for Phantom Assassin to deal with, as she lacks any AoE abilities to deal with them without items: Broodmother, Phantom Lancer, Chaos Knight, Lycan, Naga Siren, Shadow Shaman, Visage, Nature's Prophet, Terrorblade, Warlock, Wraith King.
Void Spirit
* Heroes who take a long time to become strong are in for a rough mid game, such as Outworld Destroyer, Magnus, Medusa, and Anti-Mage.
Warlock
* Channeling heroes will not go well against Warlock, especially those who build Black King Bar as Warlock's ultimate ability stun goes through spell immunity. E.g.: Crystal Maiden, Witch Doctor, Enigma, etc.
Void Spirit
* Heroes who take a long time to become strong are in for a rough mid game, such as Outworld Destroyer, Magnus, Medusa, and Anti-Mage.
Warlock
* While heroes with strong mobility are able to get close or flee from Upheaval, heroes with no escaping abilities or that lack long disables will perish against Warlock. Once the Warlock Golem lands with its stun, its hardly possible to escape when he casts Upheaval. Notable examples: Huskar, Drow Ranger, Lion, Elder Titan, etc.
Warlock
* Chaotic Offering can stop heroes who like to use spell immunity and teleport scrolls to safely farm during the early to mid game, since it stuns and also goes through spell immunity. Notable examples: 
Juggernaut, Lifestealer.
Warlock
* Warlock often stays back and counter-initiates by dropping his Chaotic Offering on Earthshaker and his allies.
Void Spirit
* Heroes who take a long time to become strong are in for a rough mid game, such as Outworld Destroyer, Magnus, Medusa, and Anti-Mage.
Warlock
* Channeling heroes will not go well against Warlock, especially those who build Black King Bar as Warlock's ultimate ability stun goes through spell immunity. E.g.: Crystal Maiden, Witch Doctor, Enigma, etc.
Warlock
* While heroes with strong mobility are able to get close or flee from Upheaval, heroes with no escaping abilities or that lack long disables will perish against Warlock. Once the Warlock Golem lands with its stun, its hardly possible to escape when he casts Upheaval. Notable examples: Huskar, Drow Ranger, Lion, Elder Titan, etc.
Void Spirit
* Void Spirit is strong against heroes who cannot deal with his rotations due to his mobility. Such heroes include 
Spectre, 
Gyrocopter, 
Morphling, and Chen.
Void Spirit
* Meepo's 
Earthbind can easily lockdown Void Spirit.
* Meepo and his clones can easily burst Void Spirit's Resonant Pulse.
Warlock
* Fatal Bonds links the Meepos together, which combined with area of effect damage or Cleave will be devastating.
Void Spirit
* Void Spirit can dodge Earthbind with Dissimilate and Astral Step, giving him a good chance to escape. If he gets caught anyways, Resonant Pulse allows him to retaliate.
Warlock
* Warlock is a very strong hero when positioned correctly, and his long cast range helps him with this. However, some Heroes might disrupt or sneakily pass through his allies and deal with him, preventing him from doing his job. Such heroes include Chaos Knight, Spirit Breaker, Riki, and more.
Warlock
* Heroes with summons and illusions as Spirit Breaker has no strong AoE capabilities to deal with them: Chaos Knight, Phantom Lancer, Terrorblade, Naga Siren, Broodmother, Warlock, Visage, Nature's Prophet, Shadow Shaman, Lycan.
Void Spirit
* Heroes with burst damage of their own won't be afraid to go toe to toe with Void Spirit, like Ursa, Lifestealer, or Axe.
Warlock
* Heroes with summons: Lycan, Broodmother, Visage, Nature's Prophet, Warlock.
Warlock
* 
Ice Blast cancels Warlock's Golem's and Shadow Word's healing.
* 
Cold Feet stuns Warlock if he stands in place, forcing him to stop channeling Upheaval immediately or be forced to stop channeling it by it's stun.
Void Spirit
* Dissimilate and Astral Step allow Void Spirit to quickly escape from Cold Feet.
* Void Spirit deals both magical and physical damage, which makes Ancient Apparition an easy target to ambush.
* If Void Spirit purchases Aghanim's Scepter, the silence provided by Resonant Pulse can disrupt Ancient Apparition during fights, as he is entirely reliant upon spells to contribute.
Warlock
* A pre-placed
Fire Remnant allows Ember Spirit to escape Upheaval.
Flame Guard blocks Shadow Word's damage.
Sleight of Fist allows Ember Spirit to attack from outside of Upheaval's range, and 
Searing Chains lets him interrupt it.
*
*
Void Spirit
* Ember Spirit has much higher mobility in
Fire Remnant than Void Spirit. 
Flame Guard is effective against Void Spirit's spells, as most of them deal magical damage.
Searing Chains prevents Void Spirit from using Dissimilate or Astral Step.
* Ember's
* The root from