edhseer Commander synergy, explained
Creature — Nightmare
Mana cost: {4}{B}{B}
Mutate {4}{B}
Flying
Whenever this creature mutates, exile the top card of each opponent's library face down. You may look at and play those cards for as long as they remain exiled.
triggered —
Causes: exile a card.
Cares about: nothing.
hits creature — 2,298 cards in the game can cause this (Mindleecher is one).
8 other cards care about it too. These are the ones with the most connections.
a Nightmare enters the battlefield — 151 cards in the game can cause this (Mindleecher is one).
anything is exiled — 2,497 cards in the game can cause this (Mindleecher is one).
1 other card cares about it too. These are the ones with the most connections.
anything attacks — 17,934 cards in the game can cause this (Mindleecher is one).
When Mindleecher attacks:
112 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 (Mindleecher is one).
When Mindleecher attacks:
181 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 (Mindleecher is one).
When Mindleecher blocks:
18 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 (Mindleecher is one).
When Mindleecher attacks:
a creature deals combat damage — 17,934 cards in the game can cause this (Mindleecher is one).
When Mindleecher deals combat damage:
194 other cards care about it too. These are the ones with the most connections.
a creature is cast — 18,010 cards in the game can cause this (Mindleecher is one).
When Mindleecher is cast:
86 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 (Mindleecher is one).
When Mindleecher enters:
299 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 (Mindleecher is one).
39 other cards care about it too. These are the ones with the most connections.