Nightmare Shepherd

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

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

a Demon enters the battlefield — 284 cards in the game can cause this (Nightmare Shepherd is one).

When Nightmare Shepherd enters:

1. Blood Speaker — returns itself from the graveyard
2. Be'lakor, the Dark Master — deals its power damage

a nontoken creature is exiled — 995 cards in the game can cause this (Nightmare Shepherd is one).

1. The War Games — When a creature is exiled thanks to Nightmare Shepherd, The War Games exiles a Warrior

a creature is exiled — 1,003 cards in the game can cause this (Nightmare Shepherd is one).

When a creature is exiled thanks to Nightmare Shepherd:

1. Ashnod's Intervention — brings a card back
2. Syr Vondam, Sunstar Exemplar — puts a +1/+1 counter on itself
3. Kaya, Spirits' Justice — copies a permanent
4. Soulherder — puts a +1/+1 counter on itself
5. Kaya's Ghostform — blinks a permanent

1 other card cares about it too. These are the ones with the most connections.

a creature leaves a graveyard — 1,302 cards in the game can cause this (Nightmare Shepherd is one).

When a creature leaves a graveyard thanks to Nightmare Shepherd:

1. Grim Reaper's Scythe — makes a token
2. Syr Konrad, the Grim — deals 1 damage
3. Cyan, Vengeful Samurai — puts a +1/+1 counter on itself
4. Along the Crooked Way — puts a counter on a Goblin or Army
5. Skeleton Crew — makes a token
6. Desecrated Tomb — makes a token
7. Chalk Outline — makes a token
8. Insidious Roots — makes a token
9. Undead Hand Ninja — makes each opponent lose 1 life
10. Rot Farm Mortipede — gets +1/+0

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

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

1. The War Doctor — When a creature is exiled thanks to Nightmare Shepherd, The War Doctor puts a time counter on itself
2. God-Eternal Oketra — When God-Eternal Oketra is exiled thanks to Nightmare Shepherd, it triggers

anything leaves a graveyard — 2,503 cards in the game can cause this (Nightmare Shepherd is one).

When a creature leaves a graveyard thanks to Nightmare Shepherd:

1. Blastoneuron — makes each opponent lose 1 life
2. Defiled Crypt // Cadaver Lab — makes a token
3. Teval, the Balanced Scale — makes a token
4. Hologram Stalker — makes a token
5. Tormod, the Desecrator — makes a token
6. Quintorius, Field Historian — makes a token
7. Garrison Excavator — makes a token
8. Amzu, Swarm's Hunger — makes a token
9. Kirol, History Buff // Pack a Punch — becomes prepared
10. Teval's Judgment — triggers

13 other cards care about 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 (Nightmare Shepherd is one).

When a Nightmare enters thanks to Nightmare Shepherd:

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 (Nightmare Shepherd is one).

1. Staff of the Storyteller — When Nightmare Shepherd 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.

an enchantment is cast — 3,673 cards in the game can cause this (Nightmare Shepherd is one).

When Nightmare Shepherd 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 creature is cast — 18,010 cards in the game can cause this (Nightmare Shepherd is one).

1. Primeval Bounty — When Nightmare Shepherd is cast, Primeval Bounty makes a token

90 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 (Nightmare Shepherd is one).

1. Pollywog Prodigy — When Nightmare Shepherd enters, Pollywog Prodigy puts a counter on itself
2. Lightshell Duo — When Lightshell Duo enters because Nightmare Shepherd copies it, its ability triggers again
3. Lotus-Eye Mystics — When Lotus-Eye Mystics enters because Nightmare Shepherd copies it, its ability triggers again
4. Pinnacle Monk // Mystic Peak — When Pinnacle Monk // Mystic Peak enters because Nightmare Shepherd copies it, its ability triggers again
5. Meticulous Artisan — When Meticulous Artisan enters because Nightmare Shepherd copies it, its ability triggers again
6. Crimson Operative — When Crimson Operative enters because Nightmare Shepherd copies it, its ability triggers again
7. Riptide Gearhulk — When Riptide Gearhulk enters because Nightmare Shepherd copies it, its ability triggers again
8. Ecstatic Electromancer — When Ecstatic Electromancer enters because Nightmare Shepherd copies it, its ability triggers again
9. Bedlam Reveler — When Bedlam Reveler enters because Nightmare Shepherd copies it, its ability triggers again

363 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 (Nightmare Shepherd is one).

1. Thor, God of Thunder — When Thor, God of Thunder enters because Nightmare Shepherd copies it, its ability triggers again
2. Variable Chaser // Arc of Fortune — When Variable Chaser // Arc of Fortune enters because Nightmare Shepherd copies it, its ability triggers again
3. Pompous Battlemage // Improvised Act — When Pompous Battlemage // Improvised Act enters because Nightmare Shepherd copies it, its ability triggers again
4. Pyre Rhymer // Molten Tide — When Pyre Rhymer // Molten Tide enters because Nightmare Shepherd copies it, its ability triggers again
5. Ty Lee, Chi Blocker — When Ty Lee, Chi Blocker enters because Nightmare Shepherd copies it, its ability triggers again

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