Ob Nixilis's Cruelty 
Instant
Target creature gets -5/-5 until end of turn. If that creature would die this turn, exile it instead.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Target creature gets -5/-5 until end of turn. If that creature would die this turn, exile it instead.