Manticore Eternal 
Creature — Zombie Manticore
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) This creature attacks each combat if able.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL