edhseer Commander synergy, explained
Sorcery
Mana cost: {3}{R/P}
({R/P} can be paid with either {R} or 2 life.)
Nonartifact creatures can't block this turn.
on-cast — restricts attacking or blocking
Causes: nothing.
Cares about: nothing.
a sorcery is cast — 3,720 cards in the game can cause this (Ruthless Invasion is one).
When Ruthless Invasion 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 (Ruthless Invasion is one).
When Ruthless Invasion is cast:
5 other cards care about it too. These are the ones with the most connections.