Tephraderm 
Creature — Beast
Whenever a creature deals damage to this creature, this creature deals that much damage to that creature. Whenever a spell deals damage to this creature, this creature deals that much damage to that spell's controller.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL