Dark Impostor

an Assassin deals combat damage — 212 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor deals combat damage:

1. Layla Hassan — brings a card back
2. Ezio, Blade of Vengeance — draws you 1 card
3. Etrata, Deadly Fugitive — triggers
4. Jacob Frye — exiles a card from your graveyard

an Assassin attacks — 212 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor attacks:

1. The Revelations of Ezio — puts a counter on a permanent
2. Origin of the Hidden Ones — makes a token

an Assassin creature it grants types to — 219 cards in the game can cause this.

1. Reaper's Scythe — Reaper's Scythe gives Dark Impostor an extra creature type

218 other cards cause it too. These are the ones with the most connections.

a Vampire attacks — 484 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor attacks:

1. Glass-Cast Heart — makes a token
2. Sanctum Seeker — makes each opponent lose 1 life

a nontoken Vampire attacks — 484 cards in the game can cause this (Dark Impostor is one).

1. Mavren Fein, Dusk Apostle — When Dark Impostor attacks, Mavren Fein, Dusk Apostle makes a token

a Vampire creature is cast — 484 cards in the game can cause this (Dark Impostor is one).

1. Bloodlord of Vaasgoth — When Dark Impostor is cast, Bloodlord of Vaasgoth grants bloodthirst

a Vampire deals combat damage — 484 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor deals combat damage:

1. Rakish Heir — puts a counter on a permanent
2. Stensia Masquerade — puts a counter on a permanent

a Vampire enters the battlefield — 500 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor enters:

1. Anje, Maid of Dishonor — makes a token
2. Forerunner of the Legion — gives +1/+1
3. Markov Enforcer — deals damage
4. Evelyn, the Covetous — exiles a card from a library

a creature is exiled — 1,003 cards in the game can cause this (Dark Impostor is one).

When a creature is exiled thanks to Dark Impostor:

1. Ashnod's Intervention — brings a card back
2. Soulherder — puts a +1/+1 counter on itself

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

anything is exiled — 2,497 cards in the game can cause this (Dark Impostor is one).

1. The War Doctor — When a creature is exiled thanks to Dark Impostor, The War Doctor puts a time counter on itself

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

a creature gets a counter — 2,691 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

33 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 (Dark Impostor is one).

1. Dual Nature — When a creature leaves the battlefield thanks to Dark Impostor, Dual Nature exiles a creature

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

a creature leaves the battlefield — 4,238 cards in the game can cause this (Dark Impostor is one).

When a creature leaves the battlefield thanks to Dark Impostor:

1. Extractor Demon — mills a card
2. Valor of the Worthy — makes a token
3. Traveling Plague — returns itself from the graveyard
4. Funeral March — makes a player sacrifice a creature

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

anything gets a counter — 4,415 cards in the game can cause this (Dark Impostor is one).

1. All Will Be One — When Dark Impostor gets a counter, All Will Be One deals that much damage

8 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 (Dark Impostor is one).

When Dark Impostor attacks:

1. Shaun, Father of Synths — makes a token
2. Far Fortune, End Boss — deals 1 damage
3. Temmet, Naktamun's Will — draws you 1 card
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

117 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 (Dark Impostor is one).

When Dark Impostor attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Saw — sacrifices a creature

187 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 (Dark Impostor is one).

1. Tide of War — When Dark Impostor blocks, Tide of War sacrifices a creature

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

a creature is cast — 18,010 cards in the game can cause this (Dark Impostor is one).

When Dark Impostor is cast:

1. God-Eternal Oketra — makes a token
2. Champions of the Perfect — draws you 1 card

89 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 (Dark Impostor is one).

When Dark Impostor enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself
3. Lunarch Veteran // Luminous Phantom — gains you 1 life
4. Lonis, Genetics Expert — puts a counter on itself
5. Slash, Reptile Rampager — deals 2 damage
6. Ray Fillet, Wave Warrior — puts a counter on itself
7. The Neutrinos — gets +1/+0
8. Wingnut, Bat on the Belfry — grants flying, haste and menace
9. Aetherstorm Roc — puts a counter on a permanent you control
10. Raphael, Most Attitude — exiles a card from your library

304 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 (Dark Impostor is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Dark Impostor enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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