Altered Ego

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

1. All Will Be One — When a permanent gets a counter thanks to Altered Ego, All Will Be One deals that much damage
2. Lonis, Genetics Expert — When Lonis, Genetics Expert gets a counter thanks to Altered Ego, it triggers

7 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 (Altered Ego is one).

When Altered Ego 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 (Altered Ego is one).

When Altered Ego 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 (Altered Ego is one).

When Altered Ego blocks:

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

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

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

When Altered Ego deals combat damage:

1. Primo, the Unbounded — makes a token
2. Locutus of Borg — makes a token
3. Antagonist Incorporator — makes a token
4. Hive Mind Coprocessor — makes you lose life

193 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 (Altered Ego is one).

When Altered Ego attacks:

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

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

1. Primeval Bounty — When Altered Ego is cast, Primeval Bounty 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 (Altered Ego is one).

1. Fire Nation Salvagers — When Fire Nation Salvagers enters because Altered Ego copies it, its ability triggers again
2. Goblin Goliath — When Goblin Goliath enters because Altered Ego copies it, its ability triggers again
3. Slash, Reptile Rampager — When Altered Ego enters, Slash, Reptile Rampager deals 2 damage
4. The Neutrinos — When Altered Ego enters, The Neutrinos gets +1/+0
5. Wingnut, Bat on the Belfry — When Altered Ego enters, Wingnut, Bat on the Belfry grants flying, haste and menace
6. Shadow Puppeteers — When Shadow Puppeteers enters because Altered Ego copies it, its ability triggers again
7. Tenured Inkcaster — When Tenured Inkcaster enters because Altered Ego copies it, its ability triggers again
8. Aetherstorm Roc — When Aetherstorm Roc enters because Altered Ego copies it, its ability triggers again
9. Raphael, Most Attitude — When Altered Ego enters, Raphael, Most Attitude exiles a card from your library
10. Clandestine Meddler — When Clandestine Meddler enters because Altered Ego copies it, its ability triggers again

295 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 (Altered Ego is one).

1. Caradora, Heart of Alacria — When Caradora, Heart of Alacria enters because Altered Ego copies it, its ability triggers again
2. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Altered Ego enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself
3. Ivora, Insatiable Heir — When Ivora, Insatiable Heir enters because Altered Ego copies it, its ability triggers again
4. Dogmeat, Ever Loyal — When Dogmeat, Ever Loyal enters because Altered Ego copies it, its ability triggers again
5. The Earth King — When The Earth King enters because Altered Ego copies it, its ability triggers again
6. SP//dr, Piloted by Peni — When SP//dr, Piloted by Peni enters because Altered Ego copies it, its ability triggers again
7. Mu Yanling, Wind Rider — When Mu Yanling, Wind Rider enters because Altered Ego copies it, its ability triggers again
8. The Rani — When The Rani enters because Altered Ego copies it, its ability triggers again
9. J. Jonah Jameson — When J. Jonah Jameson enters because Altered Ego copies it, its ability triggers again
10. Ultimecia, Temporal Threat — When Ultimecia, Temporal Threat enters because Altered Ego copies it, its ability triggers again

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