Mouth to Mouth 
Sorcery
Choose target opponent and target creature they control. You and that player have a breath-holding contest. If you win, you gain control of that creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL