edhseer Commander synergy, explained
Instant — Arcane
Mana cost: {1}{B}{B}
If you control a Swamp, destroy target nonblack creature.
on-cast —
Exile four cards from your graveyard.
on-cast —
Causes: a creature dies, exile a card, anything leaves a graveyard.
Cares about: nothing.
anything is exiled — 2,497 cards in the game can cause this (Horobi's Whisper is one).
anything leaves a graveyard — 2,503 cards in the game can cause this (Horobi's Whisper is one).
When Horobi's Whisper 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 (Horobi's Whisper is one).
Horobi's Whisper 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 (Horobi's Whisper is one).
When a creature dies thanks to Horobi's Whisper:
60 other cards care about it too. These are the ones with the most connections.
a creature dies — 2,830 cards in the game can cause this (Horobi's Whisper is one).
When a creature dies thanks to Horobi's Whisper:
451 other cards care about it too. These are the ones with the most connections.
a creature goes to a graveyard — 3,011 cards in the game can cause this (Horobi's Whisper is one).
When a creature hits the graveyard thanks to Horobi's Whisper:
10 other cards care about it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Horobi's Whisper is one).
When Horobi's Whisper is cast:
427 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 (Horobi's Whisper is one).
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 (Horobi's Whisper is one).
When a creature leaves the battlefield thanks to Horobi's Whisper:
29 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 (Horobi's Whisper is one).
443 other cards care about it too. These are the ones with the most connections.