Yahenni, Undying Partisan

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

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

a Vampire attacks — 484 cards in the game can cause this (Yahenni is one).

When Yahenni, Undying Partisan attacks:

1. Glass-Cast Heart — makes a token
2. Sanctum Seeker — makes each opponent lose 1 life

a nontoken Vampire attacks — 484 cards in the game can cause this (Yahenni is one).

1. Mavren Fein, Dusk Apostle — When Yahenni, Undying Partisan attacks, Mavren Fein, Dusk Apostle makes a token

a Vampire creature is cast — 484 cards in the game can cause this (Yahenni is one).

1. Bloodlord of Vaasgoth — When Yahenni, Undying Partisan is cast, Bloodlord of Vaasgoth grants bloodthirst

a Vampire deals combat damage — 484 cards in the game can cause this (Yahenni is one).

When Yahenni, Undying Partisan deals combat damage:

1. Rakish Heir — puts a counter on a permanent
2. Stensia Masquerade — puts a counter on a permanent

a Vampire enters the battlefield — 500 cards in the game can cause this (Yahenni is one).

When Yahenni, Undying Partisan enters:

1. Anje, Maid of Dishonor — makes a token
2. Forerunner of the Legion — gives +1/+1
3. Markov Enforcer — deals damage
4. Evelyn, the Covetous — exiles a card from a library

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

When you sacrifice another creature to Yahenni, Undying Partisan:

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 (Yahenni is one).

When you sacrifice another creature to Yahenni, Undying Partisan:

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

When Yahenni, Undying Partisan 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 (Yahenni is one).

Yahenni, Undying Partisan 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 (Yahenni is one).

When you sacrifice another creature to Yahenni, Undying Partisan:

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

61 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.

1. Conclave Mentor — When Conclave Mentor dies thanks to Yahenni, Undying Partisan, it gains you its power life
2. Hornet Cannon — When an Insect dies thanks to Hornet Cannon, Yahenni, Undying Partisan puts a +1/+1 counter on itself
3. Drudge Spell — When a Skeleton dies thanks to Drudge Spell, Yahenni, Undying Partisan puts a +1/+1 counter on itself
4. Amulet of Safekeeping — When a creature dies thanks to Amulet of Safekeeping, Yahenni, Undying Partisan puts a +1/+1 counter on itself
5. Bloodline Culling — When a creature dies thanks to Bloodline Culling, Yahenni, Undying Partisan puts a +1/+1 counter on itself
6. Illness in the Ranks — When a creature dies thanks to Illness in the Ranks, Yahenni, Undying Partisan puts a +1/+1 counter on itself
7. Virulent Plague — When a creature dies thanks to Virulent Plague, Yahenni, Undying Partisan puts a +1/+1 counter on itself

460 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 (Yahenni is one).

1. Ninja Teen — When you sacrifice another creature to Yahenni, Undying Partisan, 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 (Yahenni is one).

1. Gerrard, Weatherlight Hero — When Gerrard, Weatherlight Hero dies thanks to Yahenni, Undying Partisan, 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 (Yahenni is one).

1. Havi, the All-Father — Yahenni, Undying Partisan fills your graveyard toward the 4 or more cards Havi, the All-Father needs

443 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 (Yahenni is one).

1. Chorale of the Void — When Yahenni, Undying Partisan 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 enters the battlefield — 19,800 cards in the game can cause this (Yahenni is one).

When Yahenni, Undying Partisan enters:

1. Scurry Oak — puts a counter on itself
2. Fathom Mage — puts a counter on itself

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