Thunderveil Tyrant

Vigilance
Whenever Thunderveil Tyrant attacks, it gets
+2/+2 until the end of turn for each creature
you control. At the end of the turn sacrifice all creatures you control that activated this ability,
except Thunderveil Tyrant.
"Thunderveil is the voice of the devourers, the roar of
the chasms, and the chitter of the grubs."
—Kurush, the Chittering Dead