Thassa's Devourer

an Elemental enters the battlefield — 754 cards in the game can cause this (Thassa's Devourer is one).

When Thassa's Devourer enters:

1. Champion of the Path — deals its power damage
2. Risen Reef — puts a land onto the battlefield

a card is milled — 772 cards in the game can cause this (Thassa's Devourer is one).

1. Lo and Li, Royal Advisors — When Thassa's Devourer makes a player mill a card, Lo and Li, Royal Advisors puts a counter on an Advisor

an enchantment is cast — 3,673 cards in the game can cause this (Thassa's Devourer is one).

When Thassa's Devourer is cast:

1. Hallowed Haunting — makes a token
2. Daxos the Returned — puts a counter on a permanent
3. Tatsunari, Toad Rider — makes a token
4. Sythis, Harvest's Hand — gains you 1 life
5. Sigil of the Empty Throne — makes a token
6. Dawnhart Geist — gains you 2 life
7. Herald of the Pantheon — gains you 1 life
8. Kami of Transience — puts a +1/+1 counter on itself
9. Argothian Enchantress — draws you 1 card
10. Mesa Enchantress — draws you 1 card

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

a nontoken enchantment enters the battlefield — 3,691 cards in the game can cause this (Thassa's Devourer is one).

1. Historian's Boon — When Thassa's Devourer enters, Historian's Boon makes a token

an enchantment enters the battlefield — 3,743 cards in the game can cause this.

1. Calix, Guided by Fate — When Thassa's Devourer enters, Calix, Guided by Fate puts a counter on a creature
2. Elvish Archivist — When Thassa's Devourer enters, Elvish Archivist draws you 1 card
3. Victor, Valgavoth's Seneschal — When Thassa's Devourer enters, Victor, Valgavoth's Seneschal surveils
4. Strength from the Fallen — When Thassa's Devourer enters, Strength from the Fallen gives +X/+X, where X is the number of creature cards in your graveyard
5. Doomwake Giant — When Thassa's Devourer enters, Doomwake Giant shrinks a creature by -1/-1
6. Cacophony Unleashed — When Thassa's Devourer enters, Cacophony Unleashed turns something into a creature
7. Ghostly Dancers — When Thassa's Devourer enters, Ghostly Dancers makes a token
8. Archon of Sun's Grace — When Thassa's Devourer enters, Archon of Sun's Grace makes a token
9. Era of Innovation — When Era of Innovation enters, Thassa's Devourer mills a card
10. Candlekeep Sage — When Candlekeep Sage enters, Thassa's Devourer mills a card
11. Gossip's Talent — When Gossip's Talent enters, Thassa's Devourer mills a card
12. Dragon Wings — When Dragon Wings enters, Thassa's Devourer mills a card
13. They Came from the Pipes — When They Came from the Pipes enters, Thassa's Devourer mills a card
14. Kindred Discovery — When Kindred Discovery enters, Thassa's Devourer mills a card
15. Illusory Gains — When Illusory Gains enters, Thassa's Devourer mills a card
16. Intruder Alarm — When Intruder Alarm enters, Thassa's Devourer mills a card
17. Virtue of Knowledge // Vantress Visions — When Virtue of Knowledge // Vantress Visions enters, Thassa's Devourer mills a card
18. Sleep Magic — When Sleep Magic enters, Thassa's Devourer mills a card
19. Killian, Decisive Mentor — When Thassa's Devourer enters, Killian, Decisive Mentor taps a creature
20. Thoughtrender Lamia — When Thassa's Devourer enters, Thoughtrender Lamia makes an opponent discard a card

714 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 (Thassa's Devourer is one).

1. Thor, God of Thunder — Thassa's Devourer puts cards into the graveyard that Thor, God of Thunder can bring back
2. Hedonist's Trove — Thassa's Devourer puts cards into the graveyard that Hedonist's Trove can bring back
3. Samwise Gamgee — Thassa's Devourer puts cards into the graveyard that Samwise Gamgee can bring back
4. Fire Nation Salvagers — Thassa's Devourer puts cards into the graveyard that Fire Nation Salvagers can bring back
5. Bloodbond March — Thassa's Devourer puts cards into the graveyard that Bloodbond March can bring back
6. Gale, Waterdeep Prodigy — Thassa's Devourer puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
7. Harness the Storm — Thassa's Devourer puts cards into the graveyard that Harness the Storm can bring back
8. Transplant Theorist — Thassa's Devourer puts cards into the graveyard that Transplant Theorist can bring back
9. Heart-Shaped Herb — Thassa's Devourer puts cards into the graveyard that Heart-Shaped Herb can bring back
10. Sidequest: Card Collection // Magicked Card — Thassa's Devourer fills your graveyard toward the 8 or more cards Sidequest: Card Collection // Magicked Card needs

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

anything goes to a graveyard — 7,589 cards in the game can cause this (Thassa's Devourer is one).

When a card hits the graveyard thanks to Thassa's Devourer:

1. The Haunt of Hightower — puts a +1/+1 counter on itself
2. Duskmantle Guildmage — makes each opponent lose 1 life
3. Vulturous Zombie — puts a +1/+1 counter on itself
4. Quest for Ancient Secrets — puts a quest counter on itself
5. Bloodchief Ascension — makes each opponent lose 2 life
6. Compost — draws you 1 card
7. Planar Void — hits a graveyard
8. Measure of Wickedness — gives an opponent control of itself
9. Energy Field — sacrifices itself

2 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 (Thassa's Devourer is one).

When Thassa's Devourer attacks:

1. Within Range — makes each opponent lose life
2. Sparring Regimen — puts a counter on a creature
3. Far Fortune, End Boss — deals 1 damage
4. Temmet, Naktamun's Will — draws you 1 card
5. Campsite Cuisine — sacrifices a Food
6. Obsessive Pursuit — makes you lose life
7. Invisible Woman — triggers
8. Caesar, Legion's Emperor — sacrifices a creature
9. Guide of Souls — triggers

122 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 (Thassa's Devourer is one).

1. Adaptive Omnitool — When Thassa's Devourer attacks, Adaptive Omnitool searches a library

201 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 (Thassa's Devourer is one).

When Thassa's Devourer is cast:

1. Primeval Bounty — makes a token
2. Communal Brewing — it arrives with counters thanks to Communal Brewing

89 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 (Thassa's Devourer is one).

When Thassa's Devourer enters:

1. Pollywog Prodigy — puts a counter on itself
2. Airbender Ascension — puts a quest counter on itself
3. Slash, Reptile Rampager — deals 2 damage
4. Ray Fillet, Wave Warrior — puts a counter on itself

374 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 (Thassa's Devourer is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Thassa's Devourer enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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