edhseer Commander synergy, explained
Instant
Mana cost: {2}{U}
Counter target spell unless its controller pays {1} for each card in your graveyard.
on-cast —
Madness {U}
Causes: counter a spell.
Cares about: nothing.
an instant is cast — 3,931 cards in the game can cause this (Circular Logic is one).
When Circular Logic 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 (Circular Logic is one).
When Circular Logic is cast:
5 other cards care about it too. These are the ones with the most connections.