Uchuulon

a Horror deals combat damage — 382 cards in the game can cause this (Uchuulon is one).

1. Captain N'ghathrod — When Uchuulon deals combat damage, Captain N'ghathrod mills a card

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

When a creature is exiled thanks to Uchuulon:

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.

a creature leaves a graveyard — 1,302 cards in the game can cause this (Uchuulon is one).

1. Erebos's Titan — When a creature leaves a graveyard thanks to Uchuulon, Erebos's Titan triggers

12 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 (Uchuulon is one).

1. The War Doctor — When a creature is exiled thanks to Uchuulon, 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 token enters the battlefield — 2,799 cards in the game can cause this (Uchuulon is one).

When a creature enters thanks to Uchuulon:

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 (Uchuulon is one).

1. Staff of the Storyteller — When Uchuulon makes a creature 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 (Uchuulon is one).

When a creature enters thanks to Uchuulon:

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 (Uchuulon is one).

When Uchuulon makes a creature 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 (Uchuulon is one).

When Uchuulon 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
10. Toph, Earthbending Master — puts a counter on a permanent

124 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 (Uchuulon is one).

When Uchuulon attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls
9. Total War — kills a creature

195 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 (Uchuulon is one).

When Uchuulon blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Tide of War — sacrifices a creature
3. Dead-Iron Sledge — kills a creature
4. Dwindle — kills a creature

26 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 (Uchuulon is one).

1. God-Eternal Oketra — When Uchuulon 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 (Uchuulon is one).

1. Blastoneuron — When Blastoneuron enters because Uchuulon copies it, its ability triggers again
2. Hologram Stalker — When Hologram Stalker enters because Uchuulon copies it, its ability triggers again
3. Owlin Historian — When Owlin Historian enters because Uchuulon copies it, its ability triggers again
4. Fire Nation Salvagers — When Fire Nation Salvagers enters because Uchuulon copies it, its ability triggers again
5. Goblin Goliath — When Goblin Goliath enters because Uchuulon copies it, its ability triggers again
6. Slash, Reptile Rampager — When a creature enters thanks to Uchuulon, Slash, Reptile Rampager deals 2 damage
7. Ray Fillet, Wave Warrior — When Uchuulon enters, Ray Fillet, Wave Warrior puts a counter on itself
8. The Neutrinos — When a creature enters thanks to Uchuulon, The Neutrinos gets +1/+0
9. Aetherstorm Roc — When a creature enters thanks to Uchuulon, Aetherstorm Roc puts a counter on a permanent you control
10. Raphael, Most Attitude — When a creature enters thanks to Uchuulon, Raphael, Most Attitude exiles a card from your library

332 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 (Uchuulon is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a creature enters thanks to Uchuulon, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
2. Ivora, Insatiable Heir — When Ivora, Insatiable Heir enters because Uchuulon copies it, its ability triggers again
3. Dogmeat, Ever Loyal — When Dogmeat, Ever Loyal enters because Uchuulon copies it, its ability triggers again

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