Graveyard Shift 
Sorcery
This spell has flash as long as there are five or more mana values among cards in your graveyard. Return target creature card from your graveyard to the battlefield.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL