edhseer Commander synergy, explained
Instant
Mana cost: {1}{B}
Target nonblack creature gets -1/-1 until end of turn.
on-cast — shrinks a creature by -1/-1
If there are seven or more cards in your graveyard, instead destroy that creature. It can't be regenerated.
on-cast —
Causes: a creature dies.
Cares about: a card in a graveyard.
anything leaves the battlefield — 1 card in the game can cause this (Toxic Stench is one).
a creature in a graveyard — 2,769 cards in the game can cause this (Toxic Stench is one).
Toxic Stench 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 (Toxic Stench is one).
When a creature dies thanks to Toxic Stench:
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 (Toxic Stench is one).
450 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 (Toxic Stench is one).
When a creature hits the graveyard thanks to Toxic Stench:
8 other cards care about it too. These are the ones with the most connections.
an instant it makes cheaper to cast — 3,773 cards in the game can cause this.
3,772 other cards cause it too. These are the ones with the most connections.
an instant is cast — 3,931 cards in the game can cause this (Toxic Stench is one).
When Toxic Stench 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 (Toxic Stench is one).
When a creature leaves the battlefield thanks to Toxic Stench:
a creature leaves the battlefield — 4,238 cards in the game can cause this (Toxic Stench is one).
28 other cards care about it too. These are the ones with the most connections.
a permanent is put into a graveyard from the battlefield — 5,057 cards in the game can cause this (Toxic Stench is one).
15 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.
625 other cards care about it too. These are the ones with the most connections.