Sandman's Quicksand (SPM-063) - Marvel's Spider-Man Foil

Mayhem 3B (You may cast this card from your graveyard for 3B if you discarded it this turn. Timing rules still apply.)

All creatures get -2/-2 until end of turn. If this spell’s mayhem cost was paid, creatures your opponents control get -2/-2 until end of turn instead.