Terror Tide 
Sorcery
Fathomless descent — All creatures get -X/-X until end of turn, where X is the number of permanent cards in your graveyard.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Sorcery
Fathomless descent — All creatures get -X/-X until end of turn, where X is the number of permanent cards in your graveyard.