Andy, the Ascended Angel

Flying, Lifelink, Vigilance
Whenever a nontoken Angel enters the battlefield
under your control, if you control at least three
Human creatures, reveal the top card of your
library. If it is an Angel, you may play it without
paying it's mana cost. This may be done once per
turn.
"I was born with feet so I may feel life's troubles.
I grew wings to soar over them."
-Andy, the Ascended Angel