edhseer Commander synergy, explained
Instant
Mana cost: {1}{W}
Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn.
on-cast — untaps a permanent
on-cast — gives +2/+2
on-cast — grants a keyword
Causes: untap a creature.
Cares about: nothing.
a creature untaps — 519 cards in the game can cause this (Act of Heroism is one).
an instant is cast — 3,931 cards in the game can cause this (Act of Heroism is one).
When Act of Heroism is cast:
427 other cards care about it too. These are the ones with the most connections.
anything is cast — 31,128 cards in the game can cause this (Act of Heroism is one).
When Act of Heroism is cast:
5 other cards care about it too. These are the ones with the most connections.