Festercreep

anything leaves the battlefield — 1 card in the game can cause this (Festercreep is one).

1. Shaun, Father of Synths — When Shaun, Father of Synths leaves the battlefield thanks to Festercreep, it exiles a Synth you control
2. Chainer, Dementia Master — When Chainer, Dementia Master leaves the battlefield thanks to Festercreep, it exiles a Nightmare

an Elemental enters the battlefield — 754 cards in the game can cause this (Festercreep is one).

When Festercreep enters:

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

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

When Festercreep gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Generous Patron — draws you 1 card
6. Shalai and Hallar — deals that much damage
7. Danny Pink — draws you 1 card
8. Enduring Scalelord — puts a +1/+1 counter on itself
9. Bold Plagiarist — puts counters on a permanent
10. Mikey & Leo, Chaos & Order — draws you 1 card

33 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 (Festercreep is one).

Festercreep puts cards into the graveyard that:

1. Havengul Lich — can bring back
2. Liliana the Repentant — can bring back
3. Paleoloth — can bring back
4. Chainer, Nightmare Adept — can bring back
5. Banon, the Returners' Leader — can bring back
6. Surgical Suite // Hospital Room — can bring back
7. Sword of Light and Shadow — can bring back
8. Necromantic Thirst — can bring back
9. Krile Baldesion — can bring back
10. Extus, Oriq Overlord // Awaken the Blood Avatar — can bring 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 (Festercreep is one).

When a creature dies thanks to Festercreep:

1. Zahur, Glory's Past — makes a token
2. Vraska, the Silencer — brings a card back
3. Liesa, Forgotten Archangel — brings a card back
4. Avacyn, Angel of Horror — brings a card back
5. Yedora, Grave Gardener — brings a card back
6. Nim Deathmantle — brings a card back
7. Valkyrie's Call — brings a card back
8. Decaying Soil — brings a card back
9. High-Society Hunter — draws you 1 card
10. Overseer of the Damned — makes a token

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 (Festercreep is one).

1. Conclave Mentor — When Conclave Mentor dies thanks to Festercreep, it gains you its power life
2. Pious Evangel // Wayward Disciple — When a creature dies thanks to Festercreep, Pious Evangel // Wayward Disciple makes each opponent lose 1 life
3. Daxos, Blessed by the Sun — When a creature dies thanks to Festercreep, Daxos, Blessed by the Sun gains you 1 life
4. Elas il-Kor, Sadistic Pilgrim — When a creature dies thanks to Festercreep, Elas il-Kor, Sadistic Pilgrim makes each opponent lose 1 life
5. Shriveling Rot — When a creature dies thanks to Festercreep, Shriveling Rot makes a player lose life equal to its toughness
6. Boss's Chauffeur — When Boss's Chauffeur dies thanks to Festercreep, it makes a token
7. Clavileño, First of the Blessed — When Clavileño, First of the Blessed dies thanks to Festercreep, it draws you 1 card
8. Quirion Beastcaller — When Quirion Beastcaller dies thanks to Festercreep, it puts +1/+1 counters on itself
9. Dinosaur Egg — When Dinosaur Egg dies thanks to Festercreep, it triggers
10. Saffi Eriksdotter — When a creature dies thanks to Festercreep, Saffi Eriksdotter sacrifices itself

452 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 (Festercreep is one).

1. Ninja Teen — When a creature leaves the battlefield thanks to Festercreep, Ninja Teen makes each opponent lose 1 life

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

a permanent is put into a graveyard from the battlefield — 5,057 cards in the game can cause this (Festercreep is one).

1. Gerrard, Weatherlight Hero — When Gerrard, Weatherlight Hero dies thanks to Festercreep, it exiles itself

19 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 (Festercreep is one).

1. Havi, the All-Father — Festercreep fills your graveyard toward the 4 or more cards Havi, the All-Father needs
2. Repentant Vampire — Festercreep fills your graveyard toward the 7 or more cards Repentant Vampire needs
3. Athreos, Shroud-Veiled — Festercreep puts cards into the graveyard that Athreos, Shroud-Veiled can bring back

441 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 (Festercreep is one).

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

221 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 (Festercreep is one).

1. Grim Javelineer — When Festercreep attacks, Grim Javelineer gives +1/+0

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