edhseer Commander synergy, explained
Sorcery
Mana cost: {3}{R/W}{R/W}
Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.
on-cast — untaps a permanent
on-cast — takes an extra combat
Retrace
Causes: untap a creature.
Cares about: nothing.
a creature untaps — 519 cards in the game can cause this (Waves of Aggression is one).
a sorcery is cast — 3,720 cards in the game can cause this (Waves of Aggression is one).
When Waves of Aggression is cast:
424 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 (Waves of Aggression is one).
When Waves of Aggression is cast:
5 other cards care about it too. These are the ones with the most connections.