Acridian

an Insect is put into a graveyard from the battlefield — 18 cards in the game can cause this (Acridian is one).

When Acridian is put into a graveyard from the battlefield:

1. Zask, Skittering Swarmlord — brings a card back
2. Aatchik, Emerald Radian — puts a +1/+1 counter on itself

an Insect attacks — 323 cards in the game can cause this (Acridian is one).

When Acridian attacks:

1. Vrestin, Menoptra Leader — puts a counter on a permanent
2. Fumulus, the Infestation — makes each opponent lose 1 life

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

1. Bag of Devouring — When you sacrifice Acridian, Bag of Devouring exiles it

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

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

When you sacrifice Acridian:

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 (Acridian is one).

When Acridian 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 (Acridian is one).

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

1. Pious Evangel // Wayward Disciple — When Acridian dies, Pious Evangel // Wayward Disciple makes each opponent lose 1 life
2. Daxos, Blessed by the Sun — When Acridian dies, Daxos, Blessed by the Sun gains you 1 life
3. Elas il-Kor, Sadistic Pilgrim — When Acridian dies, Elas il-Kor, Sadistic Pilgrim makes each opponent lose 1 life
4. Shriveling Rot — When Acridian dies, Shriveling Rot makes a player lose life equal to its toughness
5. Meathook Massacre II — When Acridian dies, Meathook Massacre II brings a card back
6. Ashnod's Intervention — When Acridian dies, Ashnod's Intervention brings a card back
7. Missy — When Acridian dies, Missy brings a card back
8. Malakir Rebirth // Malakir Mire — When Acridian dies, Malakir Rebirth // Malakir Mire brings a card back
9. Saffi Eriksdotter — When Acridian dies, Saffi Eriksdotter sacrifices itself
10. Angelic Renewal — When Acridian dies, Angelic Renewal sacrifices itself

451 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 (Acridian is one).

1. Ninja Teen — When Acridian 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 (Acridian is one).

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

440 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 (Acridian is one).

When Acridian 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 (Acridian is one).

1. Chorale of the Void — When Acridian 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 (Acridian is one).

1. Quirion Beastcaller — When Acridian 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 enters the battlefield — 19,800 cards in the game can cause this (Acridian is one).

When Acridian enters:

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

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