Floodgate

a Wall creature in a graveyard — 11 cards in the game can cause this (Floodgate is one).

1. Glyph of Reincarnation — When Floodgate is in the graveyard, Glyph of Reincarnation can bring it back

a Wall creature it applies animate to — 229 cards in the game can cause this.

1. Deep Freeze — Deep Freeze gives Floodgate life as a creature

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

a nontoken creature is sacrificed — 1,714 cards in the game can cause this (Floodgate is one).

When you sacrifice Floodgate:

1. Fumulus, the Infestation — makes a token
2. Bag of Devouring — exiles it

a creature is sacrificed — 1,741 cards in the game can cause this (Floodgate is one).

When you sacrifice Floodgate:

1. Ziatora, the Incinerator — deals that creature's power damage
2. Dina, Essence Brewer — draws you 1 card
3. Fleshtaker — gains you 1 life
4. Body Dropper — puts a +1/+1 counter on itself
5. Smothering Abomination — draws you 1 card
6. Kels, Fight Fixer — draws you 1 card
7. Caesar, Legion's Emperor — triggers
8. Grist, the Hunger Tide — kills a creature or planeswalker an opponent controls
9. Cabal Therapist — triggers
10. Rakdos, the Muscle — exiles a card from an opponent's library

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

a creature in a graveyard — 2,769 cards in the game can cause this (Floodgate is one).

When Floodgate is in the graveyard:

1. Chainer, Dementia Master — can bring it back
2. Havengul Lich — can bring it back
3. Liliana the Repentant — can bring it back
4. Paleoloth — can bring it back
5. Chainer, Nightmare Adept — can bring it back
6. Banon, the Returners' Leader — can bring it back
7. Surgical Suite // Hospital Room — can bring it back
8. Sword of Light and Shadow — can bring it back
9. Necromantic Thirst — can bring it back
10. Krile Baldesion — can bring it back

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

a nontoken creature dies — 2,769 cards in the game can cause this (Floodgate is one).

1. Zahur, Glory's Past — When Floodgate dies, Zahur, Glory's Past makes a token
2. Liesa, Forgotten Archangel — When Floodgate dies, Liesa, Forgotten Archangel brings a card back
3. Avacyn, Angel of Horror — When Floodgate dies, Avacyn, Angel of Horror brings a card back
4. Yedora, Grave Gardener — When Floodgate dies, Yedora, Grave Gardener brings a card back
5. Nim Deathmantle — When Floodgate dies, Nim Deathmantle brings a card back
6. Valkyrie's Call — When Floodgate dies, Valkyrie's Call brings a card back
7. Decaying Soil — When Floodgate dies, Decaying Soil brings a card back
8. High-Society Hunter — When Floodgate dies, High-Society Hunter draws you 1 card
9. Liliana, Heretical Healer // Liliana, Defiant Necromancer — When Floodgate dies, Liliana, Heretical Healer // Liliana, Defiant Necromancer flickers itself
10. Body Launderer — When Floodgate dies, Body Launderer draws and discards

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

a creature dies — 2,830 cards in the game can cause this (Floodgate is one).

1. Pious Evangel // Wayward Disciple — When Floodgate dies, Pious Evangel // Wayward Disciple makes each opponent lose 1 life
2. Daxos, Blessed by the Sun — When Floodgate dies, Daxos, Blessed by the Sun gains you 1 life
3. Elas il-Kor, Sadistic Pilgrim — When Floodgate dies, Elas il-Kor, Sadistic Pilgrim makes each opponent lose 1 life
4. Shriveling Rot — When Floodgate dies, Shriveling Rot makes a player lose life equal to its toughness
5. Meathook Massacre II — When Floodgate dies, Meathook Massacre II brings a card back
6. Saffi Eriksdotter — When Floodgate dies, Saffi Eriksdotter sacrifices itself

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

a creature leaves the battlefield — 4,238 cards in the game can cause this (Floodgate is one).

1. Ninja Teen — When Floodgate leaves the battlefield, Ninja Teen makes each opponent lose 1 life

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

a card in a graveyard — 7,589 cards in the game can cause this (Floodgate is one).

1. Charnelhoard Wurm — When Floodgate is in the graveyard, Charnelhoard Wurm can bring it back
2. Havi, the All-Father — Floodgate fills your graveyard toward the 4 or more cards Havi, the All-Father needs
3. Repentant Vampire — Floodgate fills your graveyard toward the 7 or more cards Repentant Vampire needs
4. Treacherous Vampire — Floodgate fills your graveyard toward the 7 or more cards Treacherous Vampire needs
5. Athreos, Shroud-Veiled — When Floodgate is in the graveyard, Athreos, Shroud-Veiled can bring it back

439 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 (Floodgate is one).

When Floodgate attacks:

1. Shaun, Father of Synths — makes a token
2. Grim Javelineer — gives +1/+0
3. Clavileño, First of the Blessed — turns something into a creature

146 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 (Floodgate is one).

1. Chorale of the Void — When Floodgate attacks, Chorale of the Void brings a card back

219 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 (Floodgate is one).

1. Quirion Beastcaller — When Floodgate is cast, Quirion Beastcaller puts a +1/+1 counter on itself

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

a creature is dealt damage — 18,923 cards in the game can cause this (Floodgate is one).

1. Soul Link — When Floodgate is dealt damage, Soul Link gains you that much life

26 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 (Floodgate is one).

When Floodgate enters:

1. Boss's Chauffeur — puts a +1/+1 counter on itself
2. Dinosaur Egg — puts a counter on itself

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