Splinter, the Mentor

a Rat attacks — 162 cards in the game can cause this (Splinter is one).

1. Persistent Marshstalker — When Splinter, the Mentor attacks, Persistent Marshstalker returns itself from the graveyard

a Ninja deals combat damage — 165 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor deals combat damage:

1. Ingenious Infiltrator — draws you 1 card
2. Heroes in a Half Shell — puts a counter on a permanent
3. Yuriko, the Tiger's Shadow — makes an opponent lose life

a Ninja creature deals combat damage — 165 cards in the game can cause this (Splinter is one).

1. Prosperous Thief — When Splinter, the Mentor deals combat damage, Prosperous Thief makes a token

a Ninja enters the battlefield — 172 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor enters:

1. Smoke Shroud — returns itself from the graveyard
2. Quintessential Katana — triggers
3. April O'Neil, Live on the Scene — triggers

a Rat enters the battlefield — 186 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor enters:

1. Wick, the Whorled Mind — makes a token
2. Lord Skitter, Sewer King — hits a graveyard

1 other card cares about it too. These are the ones with the most connections.

a Mutant attacks — 280 cards in the game can cause this (Splinter is one).

1. Wolverine, Claws Out — When Splinter, the Mentor attacks, Wolverine, Claws Out makes your creatures bigger

a Mutant enters the battlefield — 286 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor enters:

1. Genghis Frog — makes a token
2. X-23, Deadly Weapon — puts a counter on a permanent

1 other card cares about it too. These are the ones with the most connections.

a token enters the battlefield — 3,710 cards in the game can cause this (Splinter is one).

When a Mutagen enters thanks to Splinter, the Mentor:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

3 other cards care about it too. These are the ones with the most connections.

a token is created — 3,711 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor makes a Mutagen token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

17 other cards care about it too. These are the ones with the most connections.

a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this.

1. Portcullis — When a creature leaves the battlefield thanks to Portcullis, Splinter, the Mentor makes a token
2. Decoction Module — When a creature leaves the battlefield thanks to Decoction Module, Splinter, the Mentor makes a token
3. Sword of Hearth and Home — When a creature leaves the battlefield thanks to Sword of Hearth and Home, Splinter, the Mentor makes a token
4. Toxic Stench — When a creature leaves the battlefield thanks to Toxic Stench, Splinter, the Mentor makes a token
5. Oathkeeper, Takeno's Daisho — When a creature leaves the battlefield thanks to Oathkeeper, Takeno's Daisho, Splinter, the Mentor makes a token
6. Body Snatcher — When Body Snatcher leaves the battlefield, Splinter, the Mentor makes a token
7. Paramecia Coloniex — When Paramecia Coloniex leaves the battlefield, Splinter, the Mentor makes a token
8. Magus of the Bridge — When Magus of the Bridge leaves the battlefield, Splinter, the Mentor makes a token
9. Isareth the Awakener — When Isareth the Awakener leaves the battlefield, Splinter, the Mentor makes a token
10. Coffin Queen — When Coffin Queen leaves the battlefield, Splinter, the Mentor makes a token

4,123 other cards cause it too. These are the ones with the most connections.

an artifact enters the battlefield — 4,643 cards in the game can cause this (Splinter is one).

When a Mutagen enters thanks to Splinter, the Mentor:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

56 other cards care about it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards

121 other cards care about it too. These are the ones with the most connections.

a creature attacks — 17,934 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Saw — sacrifices a creature

191 other cards care about it too. These are the ones with the most connections.

a creature blocks — 17,934 cards in the game can cause this (Splinter is one).

1. Tide of War — When Splinter, the Mentor blocks, Tide of War sacrifices a creature

27 other cards care about it too. These are the ones with the most connections.

a creature enters the battlefield — 19,800 cards in the game can cause this (Splinter is one).

When Splinter, the Mentor enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Gimli of the Glittering Caves — puts counters on a permanent
3. Ray Fillet, Wave Warrior — puts a counter on itself
4. Legolas Greenleaf — puts a counter on a permanent
5. The Neutrinos — gets +1/+0
6. Wingnut, Bat on the Belfry — grants flying, haste and menace
7. Aetherstorm Roc — puts a counter on a permanent you control
8. Raphael, Most Attitude — exiles a card from your library

318 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,499 cards in the game can cause this (Splinter is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Splinter, the Mentor enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

53 other cards care about it too. These are the ones with the most connections.