Bound Tenebrophage

Deathtouch, defender, lifelink
Whenever a creature attacks you, Bound Tenebrophage deals 5 damage to its controller.
"I was struck with utter horror at the sight! No mortal, even so long-lived as an elf, was meant to see what these researchers had found."
-L. P. Hewers, The Devourer in the Darkness