Emrakul's Angel

Devoid
Flying, first strike, vigilance, trample
You may sacrifice 2 Angels instead of paying Emrakul's Angel's mana cost. If you do, Emrakul's Angel gets -1/+2 and loses trample.
As long as you control a Legendary Eldrazi creature, Emrakul's Angel is indestructible.
"We are Emrakul!"