edhseer Commander synergy, explained
Sorcery
Mana cost: {2}{B}{B}
Exile All Hallow's Eve with two scream counters on it.
on-cast —
on-cast — puts 2 counters on it
At the beginning of your upkeep, if this card is exiled with a scream counter on it, remove a scream counter from it. If there are no more scream counters on it, put it into your graveyard and each player returns all creature cards from their graveyard to the battlefield.
triggered —
triggered —
triggered — brings a card back
Causes: exile a card, anything leaves the battlefield, put a counter on anything, remove a counter from anything, put anything into a graveyard, put a creature onto the battlefield, a creature leaves a graveyard.
Cares about: a creature in a graveyard.
a creature leaves a graveyard — 1,302 cards in the game can cause this (All Hallow's Eve is one).
When a creature leaves a graveyard thanks to All Hallow's Eve:
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 (All Hallow's Eve is one).
anything leaves a graveyard — 2,503 cards in the game can cause this (All Hallow's Eve is one).
When a creature leaves a graveyard thanks to All Hallow's Eve:
13 other cards care about it too. These are the ones with the most connections.
a sorcery is cast — 3,720 cards in the game can cause this (All Hallow's Eve is one).
When All Hallow's Eve is cast:
424 other cards care about it too. These are the ones with the most connections.
anything gets a counter — 4,415 cards in the game can cause this (All Hallow's Eve is one).
8 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 (All Hallow's Eve is one).
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 (All Hallow's Eve is one).
When All Hallow's Eve hits the graveyard:
8 other cards care about it too. These are the ones with the most connections.
a nontoken creature enters the battlefield — 18,448 cards in the game can cause this (All Hallow's Eve is one).
32 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 (All Hallow's Eve is one).
341 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 (All Hallow's Eve is one).
36 other cards care about it too. These are the ones with the most connections.