Ashiok, Nightmare Muse

a Nightmare enters the battlefield — 151 cards in the game can cause this (Ashiok is one).

1. Umbris, Fear Manifest — When a Nightmare enters thanks to Ashiok, Nightmare Muse, Umbris, Fear Manifest exiles a card from an opponent's library

a spell is cast — 155 cards in the game can cause this (Ashiok is one).

1. The Kingpin of Crime — When a spell is cast thanks to Ashiok, Nightmare Muse, The Kingpin of Crime drains each opponent
2. Elena, Turk Recruit — When Ashiok, Nightmare Muse is cast, Elena, Turk Recruit puts a +1/+1 counter on itself
3. Treasury Thrull — When a spell is cast thanks to Ashiok, Nightmare Muse, Treasury Thrull drains each opponent
4. Moira and Teshar — When Ashiok, Nightmare Muse is cast, Moira and Teshar brings a card back
5. Teshar, Ancestor's Apostle — When Ashiok, Nightmare Muse is cast, Teshar, Ancestor's Apostle brings a card back
6. Life Insurance — When a spell is cast thanks to Ashiok, Nightmare Muse, Life Insurance drains each opponent
7. Sorin of House Markov // Sorin, Ravenous Neonate — When a spell is cast thanks to Ashiok, Nightmare Muse, Sorin of House Markov // Sorin, Ravenous Neonate drains each opponent
8. Syndicate Heavy — When a spell is cast thanks to Ashiok, Nightmare Muse, Syndicate Heavy drains each opponent
9. Norin the Wary — When a spell is cast thanks to Ashiok, Nightmare Muse, Norin the Wary flickers itself
10. Hunting Grounds — When a spell is cast thanks to Ashiok, Nightmare Muse, Hunting Grounds puts a creature onto the battlefield

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

a planeswalker it grants abilities to — 312 cards in the game can cause this.

1. Ichormoon Gauntlet — Ichormoon Gauntlet gives Ashiok, Nightmare Muse an extra ability
2. Way of the Cryomancer — Way of the Cryomancer gives Ashiok, Nightmare Muse an extra ability
3. Way of the Deathbringer — Way of the Deathbringer gives Ashiok, Nightmare Muse an extra ability

309 other cards cause it too. These are the ones with the most connections.

a planeswalker is cast — 361 cards in the game can cause this (Ashiok is one).

1. Jaya's Phoenix — When Ashiok, Nightmare Muse is cast, Jaya's Phoenix returns itself from the graveyard
2. Interplanar Beacon — When Ashiok, Nightmare Muse is cast, Interplanar Beacon gains you 1 life
3. Defiler of Flesh — When Ashiok, Nightmare Muse is cast, Defiler of Flesh gives +1/+1
4. Defiler of Dreams — When Ashiok, Nightmare Muse is cast, Defiler of Dreams draws you 1 card
5. Primeval Bounty — When Ashiok, Nightmare Muse is cast, Primeval Bounty puts 3 counters on a creature
6. Pollywog Prodigy — When a spell is cast thanks to Ashiok, Nightmare Muse, Pollywog Prodigy draws you 1 card
7. Tetsuko Umezawa, Pursuer — When a spell is cast thanks to Ashiok, Nightmare Muse, Tetsuko Umezawa, Pursuer gets +1/+1
8. Chimeric Egg — When a spell is cast thanks to Ashiok, Nightmare Muse, Chimeric Egg puts a charge counter on itself
9. Thor, God of Thunder — When Ashiok, Nightmare Muse is cast, Thor, God of Thunder deals that spell's mana value damage
10. Blood Funnel — When Ashiok, Nightmare Muse is cast, Blood Funnel sacrifices a creature

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

a planeswalker enters the battlefield — 366 cards in the game can cause this (Ashiok is one).

1. Liliana the Repentant — When a Nightmare enters thanks to Ashiok, Nightmare Muse, Liliana the Repentant mills a card
2. Liliana the Faultless — When a Nightmare enters thanks to Ashiok, Nightmare Muse, Liliana the Faultless gains you 1 life
3. Builder's Talent — When Ashiok, Nightmare Muse enters, Builder's Talent puts a counter on a creature
4. Brainstealer Dragon — When a Nightmare enters thanks to Ashiok, Nightmare Muse, Brainstealer Dragon makes a player lose life equal to its mana value
5. Cloudstone Curio — When a Nightmare enters thanks to Ashiok, Nightmare Muse, Cloudstone Curio triggers

anything is exiled — 2,497 cards in the game can cause this (Ashiok is one).

1. The War Doctor — When a permanent is exiled thanks to Ashiok, Nightmare Muse, The War Doctor puts a time counter on itself

provide a creature to sacrifice — 2,720 cards in the game can cause this.

1. Jalira, Master Polymorphist — Ashiok, Nightmare Muse makes fodder for Jalira, Master Polymorphist
2. Polymorph — Ashiok, Nightmare Muse makes fodder for Polymorph
3. Proteus Staff — Ashiok, Nightmare Muse makes fodder for Proteus Staff
4. Synthetic Destiny — Ashiok, Nightmare Muse makes fodder for Synthetic Destiny
5. Mass Polymorph — Ashiok, Nightmare Muse makes fodder for Mass Polymorph

2,715 other cards cause it too. These are the ones with the most connections.

a creature token enters the battlefield — 2,799 cards in the game can cause this (Ashiok is one).

When a Nightmare enters thanks to Ashiok, Nightmare Muse:

1. Securitron Squadron — puts a counter on a permanent
2. Anointer Priest — gains you 1 life
3. Nesting Dovehawk — puts a +1/+1 counter on itself

a creature token is created — 2,799 cards in the game can cause this (Ashiok is one).

1. Staff of the Storyteller — When Ashiok, Nightmare Muse makes a Nightmare token, Staff of the Storyteller puts a story counter on itself

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

a token enters the battlefield — 3,710 cards in the game can cause this (Ashiok is one).

When a Nightmare enters thanks to Ashiok, Nightmare Muse:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Ashiok is one).

When Ashiok, Nightmare Muse makes a Nightmare token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

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

a nontoken creature leaves the battlefield — 4,133 cards in the game can cause this (Ashiok is one).

1. Dual Nature — When a creature leaves the battlefield thanks to Ashiok, Nightmare Muse, Dual Nature exiles a creature

3 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 (Ashiok is one).

When a creature leaves the battlefield thanks to Ashiok, Nightmare Muse:

1. Extractor Demon — mills a card
2. Valor of the Worthy — makes a token
3. Traveling Plague — returns itself from the graveyard
4. Funeral March — makes a player sacrifice a creature

25 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 (Ashiok is one).

When a Nightmare enters thanks to Ashiok, Nightmare Muse:

1. Season of Growth — scries
2. Lunarch Veteran // Luminous Phantom — gains you 1 life
3. Pious Evangel // Wayward Disciple — gains you 1 life
4. Daxos, Blessed by the Sun — gains you 1 life
5. Elas il-Kor, Sadistic Pilgrim — gains you 1 life
6. Ayara, First of Locthwain — makes each opponent lose 1 life
7. Blasting Station — untaps itself
8. Mogg Bombers — sacrifices itself
9. Flame-Kin War Scout — sacrifices itself
10. Monkey Cage — sacrifices itself

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