Drekavac

a Beast creature is cast — 587 cards in the game can cause this (Drekavac is one).

1. Tawnos, the Toymaker — When Drekavac is cast, Tawnos, the Toymaker copies a spell

a Beast enters the battlefield — 632 cards in the game can cause this (Drekavac is one).

When Drekavac enters:

1. Totem Speaker — gains you 3 life
2. Wirewood Savage — draws you 1 card
3. Woodland Liege — draws you 1 card
4. Aether Charge — deals 4 damage

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

When you sacrifice Drekavac:

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 (Drekavac is one).

When you sacrifice Drekavac:

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 card is discarded — 2,042 cards in the game can cause this (Drekavac is one).

When Drekavac makes a player discard a card:

1. Ivora, Insatiable Heir — puts a +1/+1 counter on itself
2. Cool but Rude — deals 2 damage
3. Containment Construct — brings a card back
4. Moonstone, Harsh Mistress — brings a card back
5. Lazotep Chancellor — puts 2 counters on a Zombie or Army
6. Magmakin Artillerist — deals that much damage
7. Inti, Seneschal of the Sun — exiles a card from your library
8. Pitchstone Wall — sacrifices itself
9. Currency Converter — exiles it
10. Hostile Investigator — triggers

52 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 (Drekavac is one).

When Drekavac 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 (Drekavac is one).

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

1. Pious Evangel // Wayward Disciple — When Drekavac dies, Pious Evangel // Wayward Disciple makes each opponent lose 1 life

460 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 (Drekavac is one).

1. Shaun, Father of Synths — When Drekavac attacks, Shaun, Father of Synths makes a token

149 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 (Drekavac is one).

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

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