Leering Onlooker

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

When Leering Onlooker 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 (Leering Onlooker is one).

1. Mavren Fein, Dusk Apostle — When Leering Onlooker attacks, Mavren Fein, Dusk Apostle makes a token

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

1. Bloodlord of Vaasgoth — When Leering Onlooker is cast, Bloodlord of Vaasgoth grants bloodthirst

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

When Leering Onlooker 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 (Leering Onlooker is one).

When Leering Onlooker 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 leaves a graveyard — 1,302 cards in the game can cause this (Leering Onlooker is one).

When Leering Onlooker leaves a graveyard:

1. Grim Reaper's Scythe — makes a token
2. Syr Konrad, the Grim — deals 1 damage
3. Cyan, Vengeful Samurai — puts a +1/+1 counter on itself
4. Along the Crooked Way — puts a counter on a Goblin or Army
5. Skeleton Crew — makes a token
6. Desecrated Tomb — makes a token
7. Chalk Outline — makes a token
8. Insidious Roots — makes a token
9. Undead Hand Ninja — makes each opponent lose 1 life
10. Erebos's Titan — triggers

3 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 (Leering Onlooker is one).

1. The War Doctor — When Leering Onlooker is exiled, The War Doctor puts a time counter on itself

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

anything leaves a graveyard — 2,503 cards in the game can cause this (Leering Onlooker is one).

When Leering Onlooker leaves a graveyard:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

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

a creature token enters the battlefield — 2,799 cards in the game can cause this (Leering Onlooker is one).

When a Bat enters thanks to Leering Onlooker:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (Leering Onlooker is one).

1. Staff of the Storyteller — When Leering Onlooker makes a Bat token, Staff of the Storyteller puts a story counter on itself

3 other cards care 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 (Leering Onlooker is one).

When a Bat enters thanks to Leering Onlooker:

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 (Leering Onlooker is one).

When Leering Onlooker makes a Bat 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.

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

When Leering Onlooker attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Invisible Woman — triggers
4. Caesar, Legion's Emperor — sacrifices a creature
5. Guide of Souls — triggers

129 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 (Leering Onlooker is one).

1. Adaptive Omnitool — When Leering Onlooker attacks, Adaptive Omnitool searches a library

203 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 (Leering Onlooker is one).

1. God-Eternal Oketra — When Leering Onlooker is cast, God-Eternal Oketra makes a token

90 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 (Leering Onlooker is one).

1. Slash, Reptile Rampager — When a Bat enters thanks to Leering Onlooker, Slash, Reptile Rampager deals 2 damage
2. Ray Fillet, Wave Warrior — When Leering Onlooker enters, Ray Fillet, Wave Warrior puts a counter on itself
3. Aetherstorm Roc — When a Bat enters thanks to Leering Onlooker, Aetherstorm Roc puts a counter on a permanent you control

347 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 (Leering Onlooker is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Bat enters thanks to Leering Onlooker, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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