edhseer Commander synergy, explained
Creature — Hag // Instant — Adventure
Mana cost: {4}{U} // {2}{U}
When this creature enters, creatures your opponents control get -4/-0 until end of turn.
triggered — shrinks a creature by -4/-0
Up to two target creatures each get +1/+0 until end of turn and can't be blocked this turn.
on-cast — gives +1/+0
on-cast — restricts what can block it
Causes: a creature dies.
Cares about: nothing.
an Adventure instant is cast — 61 cards in the game can cause this (Sea Hag is one).
a creature in a graveyard — 2,769 cards in the game can cause this (Sea Hag is one).
Sea Hag // Aquatic Ingress 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 (Sea Hag is one).
When a creature dies thanks to Sea Hag // Aquatic Ingress:
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 (Sea Hag is one).
When a creature dies thanks to Sea Hag // Aquatic Ingress:
460 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 (Sea Hag is one).
When Sea Hag // Aquatic Ingress is cast:
433 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 (Sea Hag is one).
When Sea Hag // Aquatic Ingress attacks:
150 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 (Sea Hag is one).
223 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 (Sea Hag is one).
When Sea Hag // Aquatic Ingress enters:
460 other cards care about it too. These are the ones with the most connections.