Hooded Hydra

a Snake deals combat damage — 226 cards in the game can cause this (Hooded Hydra is one).

1. Seshiro the Anointed — When Hooded Hydra deals combat damage, Seshiro the Anointed draws you 1 card

a nontoken Snake enters the battlefield — 227 cards in the game can cause this (Hooded Hydra is one).

1. Sosuke's Summons — When Hooded Hydra enters, Sosuke's Summons returns itself from the graveyard

a creature is turned face up — 238 cards in the game can cause this (Hooded Hydra is one).

When Hooded Hydra is turned face up:

1. Printlifter Ooze — makes a token
2. Experiment Twelve — puts its power counters on a permanent
3. Pyrotechnic Performer — deals its power damage
4. Pine Walker — untaps a permanent
5. Fatal Mutation — kills it

a Snake creature it boosts — 245 cards in the game can cause this.

1. Sosuke, Son of Seshiro — Sosuke, Son of Seshiro gives Hooded Hydra bigger stats

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

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

1. Scurry Oak — When Scurry Oak gets a counter thanks to Hooded Hydra, it makes a token
2. Fathom Mage — When Fathom Mage gets a counter thanks to Hooded Hydra, it draws you 1 card
3. Hollowmurk Siege — When Hooded Hydra gets a counter, Hollowmurk Siege draws you 1 card
4. Ant-Man, Colony Commander — When Hooded Hydra gets a counter, Ant-Man, Colony Commander makes a token
5. Earth Kingdom General — When Hooded Hydra gets a counter, Earth Kingdom General gains you that much life
6. Casey Jones, Back Alley Brute — When Hooded Hydra gets a counter, Casey Jones, Back Alley Brute deals that much damage
7. Generous Patron — When Hooded Hydra gets a counter, Generous Patron draws you 1 card
8. Shalai and Hallar — When Hooded Hydra gets a counter, Shalai and Hallar deals that much damage
9. Danny Pink — When Hooded Hydra gets a counter, Danny Pink draws you 1 card
10. Enduring Scalelord — When Hooded Hydra gets a counter, Enduring Scalelord puts a +1/+1 counter on itself

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

provide a creature to sacrifice — 2,720 cards in the game can cause this.

1. Birthing Ritual — Hooded Hydra makes fodder for Birthing Ritual

2,719 other cards cause 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 (Hooded Hydra is one).

When a Snake enters thanks to Hooded Hydra:

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 (Hooded Hydra is one).

1. Staff of the Storyteller — When Hooded Hydra makes a Snake 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 (Hooded Hydra is one).

When a Snake enters thanks to Hooded Hydra:

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 (Hooded Hydra is one).

When Hooded Hydra makes a Snake 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 gets a counter — 4,415 cards in the game can cause this (Hooded Hydra is one).

1. All Will Be One — When Hooded Hydra gets a counter, All Will Be One deals that much damage
2. Lonis, Genetics Expert — When Lonis, Genetics Expert gets a counter thanks to Hooded Hydra, 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 (Hooded Hydra is one).

When Hooded Hydra 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

125 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 (Hooded Hydra is one).

When Hooded Hydra 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

198 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 (Hooded Hydra is one).

1. Tide of War — When Hooded Hydra blocks, Tide of War sacrifices a creature

29 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 (Hooded Hydra is one).

When a Snake enters thanks to Hooded Hydra:

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

336 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 (Hooded Hydra is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When a Snake enters thanks to Hooded Hydra, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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