Hruulax, Last of the Owls

Flying, Indestructible
When Hruulax, Last of the Owls attacks, target creature, planes walker, or opponent takes {x} damage
———{line}
The old owls are dead, reduced to dust and bone.
Only I remain to remember their glory.
Only I remain to recall the forests grandeur.
Only I live to hope for their return.
-Hruulax, Lord of the forest