edhseer Commander synergy, explained
Instant
Mana cost: {2}{U}{U}
This spell costs {1}{U} less to cast if it targets an instant or sorcery spell.
on-cast — costs less
Counter target spell.
on-cast —
Causes: counter a spell.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Brush Off is one).
When Brush Off 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 (Brush Off is one).
When Brush Off is cast:
5 other cards care about it too. These are the ones with the most connections.