edhseer Commander synergy, explained
Creature — Horror Spirit
Mana cost: {3}{B}
At the beginning of the end step, if this card is in your graveyard with a creature card directly above it, you may return this card to your hand.
triggered — brings a card back
This creature deals 1 damage to any target.
activated {1}, Sacrifice a creature —
activated {1}, Sacrifice a creature — deals 1 damage
Causes: anything leaves a graveyard, sacrifice a creature, a creature dies, anything deals noncombat damage.
Cares about: a creature to sacrifice.
anything leaves the battlefield — 1 card in the game can cause this (Krovikan Horror is one).
a Horror deals combat damage — 382 cards in the game can cause this (Krovikan Horror is one).
a nontoken Spirit deals combat damage — 725 cards in the game can cause this (Krovikan Horror is one).
a nontoken Spirit enters the battlefield — 727 cards in the game can cause this (Krovikan Horror is one).
a Spirit enters the battlefield — 863 cards in the game can cause this (Krovikan Horror is one).
When Krovikan Horror enters:
a Spirit creature it boosts — 889 cards in the game can cause this.
888 other cards cause it too. These are the ones with the most connections.
a creature leaves a graveyard — 1,302 cards in the game can cause this (Krovikan Horror is one).
When Krovikan Horror leaves a graveyard:
3 other cards care about it too. These are the ones with the most connections.
a nontoken creature is sacrificed — 1,714 cards in the game can cause this (Krovikan Horror is one).
When you sacrifice a creature to Krovikan Horror:
a creature is sacrificed — 1,741 cards in the game can cause this (Krovikan Horror is one).
When you sacrifice a creature to Krovikan Horror:
19 other cards care about it too. These are the ones with the most connections.
anything leaves a graveyard — 2,503 cards in the game can cause this (Krovikan Horror is one).
When Krovikan Horror leaves a graveyard:
13 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 (Krovikan Horror is one).
Krovikan Horror puts cards into the graveyard that:
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 (Krovikan Horror is one).
When you sacrifice a creature to Krovikan Horror:
63 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 (Krovikan Horror is one).
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 (Krovikan Horror is one).
219 other cards care about it too. These are the ones with the most connections.