Anti-Mage
[wiki] rating: 1.0 (winrate: 53% pickrate: 11%)Silencer
[wiki] rating: 1.0 (winrate: 52% pickrate: 15%)Snapfire
* 
Global Silence stops Snapfire's 
Mortimer Kisses.
* 
Last Word can prevent Snapfire from casting additional spells.
Abaddon
[wiki] rating: 1.0 (winrate: 50% pickrate: 6%)Snapfire
* 
Aphotic Shield prevents damage and dispels the slow from Snapfire's Mortimer Kisses.
* 
Borrowed Time allows Abaddon to gain HP during Snapfire's Mortimer Kisses.
Ancient Apparition
[wiki] rating: 1.0 (winrate: 50% pickrate: 5%)Snapfire
* Snapfire is vulnerable while she is casting 
Mortimer Kisses making her an easy target for the effects of Cold Feet and Ice Blast.
Additional:
* 
Ice Blast, 
Cold Feet, and 
Ice Vortex are easier to land on Snapfire while she channels her Mortimer Kisses.
Nyx Assassin
[wiki] rating: 1.0 (winrate: 50% pickrate: 4%)Snapfire
* 
Spiked Carapace stops Snapfire's Mortimer Kisses.
Juggernaut
[wiki] rating: 1.0 (winrate: 50% pickrate: 11%)Snapfire
* 
Blade Fury makes Juggernaut immune against all of Snapfire's spells and allows him to get closer.
* A well-timed 
Omnislash allows Juggernaut to dodge Snapfire's spells, and she has no way to deal with it.
Pudge
[wiki] rating: 1.0 (winrate: 49% pickrate: 29%)Snapfire
* 
Meat Hook can be used immediately after Mortimer Kisses since Snapfire is forced to stay in place.
Meepo
[wiki] rating: 0.6 (winrate: 56% pickrate: 1%)Snapfire
* Heroes with high movement speeds like 
Pugna and 
Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
* Heroes with mobility spells (such as 
Queen of Pain's 
Blink and 
Clockwerk with 
Hookshot) can easily avoid 
Lil' Shredder and Mortimer Kisses.
* Heroes with high movement speeds like Pugna and Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
Pugna
[wiki] rating: 0.6 (winrate: 47% pickrate: 3%)Snapfire
* Heroes with high movement speeds like Pugna and Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
* Heroes with mobility spells (such as Queen of Pain's Blink and Clockwerk with Hookshot) can easily avoid Lil' Shredder and Mortimer Kisses.
* Heroes with high movement speeds like Pugna and Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
Queen of Pain
[wiki] rating: 0.6 (winrate: 46% pickrate: 6%)Snapfire
* Heroes with mobility spells (such as Queen of Pain's Blink and Clockwerk with Hookshot) can easily avoid Lil' Shredder and Mortimer Kisses.
* Heroes with high movement speeds like Pugna and Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
Faceless Void
[wiki] rating: -1.0 (winrate: 48% pickrate: 9%)Snapfire
* Mortimer Kisses can deal a large amount of damage to Void during 
Chronosphere, either outright killing him or forcing him out before he can kill any allies caught in his ultimate.
Phantom Lancer
[wiki] rating: -1.0 (winrate: 50% pickrate: 2%)Snapfire
* Snapfire's AoE abilities in general are effective in clearing Phantom Lancer's illusions.
Phoenix
[wiki] rating: -1.0 (winrate: 50% pickrate: 5%)Snapfire
* Lil' Shredder will make quick work of 
Supernova.
* Mortimer Kisses can easily hit a Phoenix using 
Sun Ray.
Naga Siren
[wiki] rating: -1.0 (winrate: 51% pickrate: 3%)Snapfire
* Mortimer Kisses can make quick work of Naga Siren's illusions.
* 
Scatterblast and 
Firesnap Cookie's AoE damage are also decent ways to deal with Naga's illusions.
Chen
[wiki] rating: -1.0 (winrate: 51% pickrate: 0%)Snapfire
* Mortimer Kisses will quickly destroy Chen's creeps and might waste 
Hand of God.
Omniknight
[wiki] rating: -1.0 (winrate: 55% pickrate: 3%)Snapfire
* Mortimer Kisses can reduce Omniknight's impact in teamfights. Omniknight's 
Heavenly Grace cannot purge multiple stacks of Mortimer Kisses. The damage is also magical, making Omniknight's ultimate, 
Guardian Angel, useless.
Enchantress
[wiki] rating: -0.6 (winrate: 46% pickrate: 2%)Snapfire
* Heroes with nukes that can jump her: Clockwerk, 
Snapfire, 
Spirit Breaker, 
Techies
Chaos Knight
[wiki] rating: -0.6 (winrate: 47% pickrate: 3%)Snapfire
* Heroes reliant on illusions or summons: 
Broodmother, 
Chaos Knight, 
Naga Siren.
Zeus
[wiki] rating: -0.6 (winrate: 49% pickrate: 14%)Snapfire
* Heroes with summons that are destroyed by a fixed number of attacks: 
Undying's 
Tombstone, 
Gyrocopter's 
Homing Missile, and 
Zeus's 
Nimbus.
Gyrocopter
[wiki] rating: -0.6 (winrate: 50% pickrate: 7%)Snapfire
* Heroes with summons that are destroyed by a fixed number of attacks: Undying's Tombstone, Gyrocopter's Homing Missile, and Zeus's Nimbus.
Undying
[wiki] rating: -0.6 (winrate: 52% pickrate: 10%)Snapfire
* Heroes with summons that are destroyed by a fixed number of attacks: Undying's Tombstone, Gyrocopter's Homing Missile, and Zeus's Nimbus.
Broodmother
[wiki] rating: -0.6 (winrate: 54% pickrate: 3%)Snapfire
* Heroes reliant on illusions or summons: Broodmother, Chaos Knight, Naga Siren.
Clockwerk
[wiki] rating: -0.4 (winrate: 49% pickrate: 8%)Snapfire
* Heroes with mobility spells (such as Queen of Pain's Blink and Clockwerk with Hookshot) can easily avoid Lil' Shredder and Mortimer Kisses.
* Heroes with high movement speeds like Pugna and Meepo can run around, to, or away from Snapfire during Mortimer Kisses and dodge the projectiles easily due to their slow speed.
Snapfire
* Firesnap Cookie can be fed to Snapfire herself or to an ally caught inside 
Power Cogs.
* A badly placed Power Cog makes it easier for Snapfire to aim Mortimer Kisses on Clockwerk
Snapfire
*
Mana Break reduces Snapfire's already low mana pool.
Blink allows Anti-Mage to avoid being hit by 
Lil' Shredder and 
Mortimer Kisses.
*