Foul Watcher

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

1. Umbris, Fear Manifest — When Foul Watcher enters, Umbris, Fear Manifest exiles a card from an opponent's library

you surveil — 233 cards in the game can cause this (Foul Watcher is one).

When Foul Watcher surveils:

1. Mirko, Obsessive Theorist — puts a +1/+1 counter on itself
2. Prudent Fateseer // Peer Review — gives +1/+0
3. Diviner of Victory // Unwind History — gets +1/+1
4. Saheeli, Consul of Oversight — makes a token
5. Copy Catchers — makes a token
6. Proft, Consulting Detective — puts a +1/+1 counter on itself
7. Matoya, Archon Elder — draws you 1 card
8. Denzilore Fatehold — puts a counter on a creature
9. Whispering Snitch — deals 1 damage
10. Blood Operative — makes you lose life

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

a Bird attacks — 486 cards in the game can cause this (Foul Watcher is one).

When Foul Watcher attacks:

1. Hermes, Overseer of Elpis — scries
2. Choco, Seeker of Paradise — puts a land onto the battlefield

a Bird creature is cast — 486 cards in the game can cause this (Foul Watcher is one).

1. Chocobo Camp — When Foul Watcher is cast, it arrives with counters thanks to Chocobo Camp

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

a Bird deals combat damage — 486 cards in the game can cause this (Foul Watcher is one).

1. Kastral, the Windcrested — When Foul Watcher deals combat damage, Kastral, the Windcrested triggers

a nontoken Bird enters the battlefield — 487 cards in the game can cause this (Foul Watcher is one).

1. Knightfisher — When Foul Watcher enters, Knightfisher makes a token

a Bird enters the battlefield — 538 cards in the game can cause this (Foul Watcher is one).

1. Salvation Swan — When Foul Watcher enters, Salvation Swan flickers a creature you control

1 other card cares 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 (Foul Watcher is one).

1. Samwise Gamgee — Foul Watcher puts cards into the graveyard that Samwise Gamgee can bring back
2. Bloodbond March — Foul Watcher puts cards into the graveyard that Bloodbond March can bring back
3. Thor, God of Thunder — Foul Watcher puts cards into the graveyard that Thor, God of Thunder can bring back
4. Gale, Waterdeep Prodigy — Foul Watcher puts cards into the graveyard that Gale, Waterdeep Prodigy can bring back
5. Harness the Storm — Foul Watcher puts cards into the graveyard that Harness the Storm can bring back
6. Transplant Theorist — Foul Watcher puts cards into the graveyard that Transplant Theorist can bring back
7. Heart-Shaped Herb — Foul Watcher puts cards into the graveyard that Heart-Shaped Herb can bring back
8. Wayward Angel — Foul Watcher fills your graveyard toward the 7 or more cards Wayward Angel needs
9. Rescue from the Underworld — Foul Watcher puts cards into the graveyard that Rescue from the Underworld can bring back
10. Victimize — Foul Watcher puts cards into the graveyard that Victimize can bring back

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 (Foul Watcher is one).

When a card hits the graveyard thanks to Foul Watcher:

1. Quest for Ancient Secrets — puts a quest counter on itself
2. Planar Void — hits a graveyard
3. Measure of Wickedness — gives an opponent control of itself
4. Energy Field — sacrifices itself

7 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 (Foul Watcher is one).

When Foul Watcher attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

116 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 (Foul Watcher is one).

When Foul Watcher attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Saw — sacrifices a creature
7. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
8. Ultima Weapon — kills a creature an opponent controls

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

a creature blocks — 17,934 cards in the game can cause this (Foul Watcher is one).

When Foul Watcher blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Tide of War — sacrifices a creature
3. Dead-Iron Sledge — kills a creature
4. Dwindle — kills a creature

26 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 (Foul Watcher is one).

When Foul Watcher enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. The Neutrinos — gets +1/+0
4. Wingnut, Bat on the Belfry — grants flying, haste and menace
5. Aetherstorm Roc — puts a counter on a permanent you control
6. Raphael, Most Attitude — exiles a card from your library

343 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 (Foul Watcher is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Foul Watcher enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

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