edhseer Commander synergy, explained
Creature — Nightmare Dog
Mana cost: {3}{B}
This creature gets +1/+1 until end of turn.
activated Discard a card —
activated Discard a card — gives +1/+1
Madness {2}{B}
Causes: discard a card.
Cares about: nothing.
a Nightmare enters the battlefield — 151 cards in the game can cause this (Hell Mongrel is one).
a Dog deals combat damage — 201 cards in the game can cause this (Hell Mongrel is one).
a card is discarded — 2,042 cards in the game can cause this (Hell Mongrel is one).
When Hell Mongrel makes a player discard a card:
51 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 (Hell Mongrel 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 (Hell Mongrel is one).
When a card hits the graveyard thanks to Hell Mongrel:
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 (Hell Mongrel is one).
When Hell Mongrel attacks:
117 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 (Hell Mongrel is one).
When Hell Mongrel attacks:
189 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 (Hell Mongrel is one).
When Hell Mongrel blocks:
25 other cards care about it too. These are the ones with the most connections.
a nontoken creature attacks — 17,934 cards in the game can cause this (Hell Mongrel is one).
2 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 (Hell Mongrel is one).
When Hell Mongrel enters:
344 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 (Hell Mongrel is one).
60 other cards care about it too. These are the ones with the most connections.