Cat-Owl

a Cat deals combat damage — 395 cards in the game can cause this (Cat-Owl is one).

1. Feline Sovereign — When Cat-Owl deals combat damage, Feline Sovereign kills an artifact or enchantment an opponent controls

a Cat attacks — 395 cards in the game can cause this (Cat-Owl is one).

1. Arahbo, Roar of the World — When Cat-Owl attacks, Arahbo, Roar of the World grants trample

a nontoken Cat enters the battlefield — 396 cards in the game can cause this (Cat-Owl is one).

1. Arahbo, the First Fang — When Cat-Owl enters, Arahbo, the First Fang makes a token

a Cat enters the battlefield — 414 cards in the game can cause this (Cat-Owl is one).

1. Qasali Slingers — When Cat-Owl enters, Qasali Slingers kills an artifact or enchantment an opponent controls
2. Kemba, Kha Enduring — When Cat-Owl enters, Kemba, Kha Enduring triggers

a Bird attacks — 486 cards in the game can cause this (Cat-Owl is one).

When Cat-Owl attacks:

1. Hermes, Overseer of Elpis — scries
2. Choco, Seeker of Paradise — puts a land onto the battlefield

a Bird creature is cast — 486 cards in the game can cause this (Cat-Owl is one).

1. Chocobo Camp — When Cat-Owl is cast, it arrives with counters thanks to Chocobo Camp

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

a Bird deals combat damage — 486 cards in the game can cause this (Cat-Owl is one).

1. Kastral, the Windcrested — When Cat-Owl deals combat damage, Kastral, the Windcrested triggers

a nontoken Bird enters the battlefield — 487 cards in the game can cause this (Cat-Owl is one).

1. Knightfisher — When Cat-Owl enters, Knightfisher makes a token

a creature untaps — 519 cards in the game can cause this (Cat-Owl is one).

1. Fishing Pole — When Cat-Owl untaps, Fishing Pole triggers

a Bird enters the battlefield — 538 cards in the game can cause this (Cat-Owl is one).

1. Salvation Swan — When Cat-Owl enters, Salvation Swan flickers a creature you control

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

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

When Cat-Owl 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

111 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 (Cat-Owl is one).

When Cat-Owl 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. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

180 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 (Cat-Owl is one).

1. Mage Hunters' Onslaught — When Cat-Owl blocks, Mage Hunters' Onslaught makes a player lose 1 life
2. Carnage Gladiator — When Cat-Owl blocks, Carnage Gladiator makes a player lose 1 life
3. Barrow-Blade — When Cat-Owl blocks, Barrow-Blade strips abilities
4. Heat of Battle — When Cat-Owl blocks, Heat of Battle deals 1 damage
5. Battle Strain — When Cat-Owl blocks, Battle Strain deals 1 damage
6. Favor of the Woods — When Cat-Owl blocks, Favor of the Woods gains you 3 life
7. Tide of War — When Cat-Owl blocks, Tide of War sacrifices a creature
8. Dead-Iron Sledge — When Cat-Owl blocks, Dead-Iron Sledge kills a creature
9. Dwindle — When Cat-Owl blocks, Dwindle kills a creature
10. Shield of the Righteous — When Cat-Owl blocks, Shield of the Righteous triggers

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

a nontoken creature attacks — 17,934 cards in the game can cause this (Cat-Owl is one).

When Cat-Owl attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token
3. Militia's Pride — makes a token

a creature deals combat damage — 17,934 cards in the game can cause this (Cat-Owl is one).

When Cat-Owl deals combat damage:

1. Locutus of Borg — makes a token
2. Antagonist Incorporator — makes a token
3. Hive Mind Coprocessor — makes you lose life

194 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 (Cat-Owl is one).

When Cat-Owl is cast:

1. Primeval Bounty — makes a token
2. Bloodbond March — brings a card back
3. Dancing from Dark to Dawn — puts that spell's mana value counters on a creature
4. Endrek Sahr, Master Breeder — makes that spell's mana value tokens
5. Summon: Fenrir — it arrives with counters thanks to Summon: Fenrir

86 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 (Cat-Owl is one).

1. Slash, Reptile Rampager — When Cat-Owl enters, Slash, Reptile Rampager deals 2 damage
2. Ray Fillet, Wave Warrior — When Cat-Owl enters, Ray Fillet, Wave Warrior puts a counter on itself
3. The Neutrinos — When Cat-Owl enters, The Neutrinos gets +1/+0
4. Wingnut, Bat on the Belfry — When Cat-Owl enters, Wingnut, Bat on the Belfry grants flying, haste and menace
5. Aetherstorm Roc — When Cat-Owl enters, Aetherstorm Roc puts a counter on a permanent you control
6. Raphael, Most Attitude — When Cat-Owl enters, Raphael, Most Attitude exiles a card from your library

301 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 (Cat-Owl is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Cat-Owl enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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