Anya, Merciless Angel 
Legendary Creature — Angel
Flying Anya gets +3/+3 for each opponent whose life total is less than half their starting life total. As long as an opponent's life total is less than half their starting life total, Anya has indestructible.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL