edhseer Commander synergy, explained
Creature — Nightmare Sphinx
Mana cost: {4}{U}{U}
Flash
Flying
When this creature enters, surveil 4.
triggered — surveils
When you do, you may return target nonland permanent an opponent controls to its owner's hand.
triggered — bounce
Causes: surveil, an artifact leaves the battlefield, a battle leaves the battlefield, a creature leaves the battlefield, an enchantment leaves the battlefield, a planeswalker leaves the battlefield.
Cares about: nothing.
hits creature — 2,298 cards in the game can cause this.
12 other cards care about it too. These are the ones with the most connections.
a Sphinx attacks — 144 cards in the game can cause this (Dream Eater is one).
a Sphinx enters the battlefield — 149 cards in the game can cause this (Dream Eater is one).
a Nightmare enters the battlefield — 151 cards in the game can cause this (Dream Eater is one).
you surveil — 233 cards in the game can cause this (Dream Eater is one).
When Dream Eater surveils:
5 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 (Dream Eater 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 (Dream Eater is one).
When a creature leaves the battlefield thanks to Dream Eater:
27 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 (Dream Eater 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 (Dream Eater is one).
When a card hits the graveyard thanks to Dream Eater:
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 (Dream Eater is one).
When Dream Eater attacks:
120 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 (Dream Eater is one).
When Dream Eater attacks:
197 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 (Dream Eater is one).
90 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 (Dream Eater is one).
When Dream Eater enters:
341 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 (Dream Eater is one).
60 other cards care about it too. These are the ones with the most connections.