Empyrial Endowment

When Empyrial Endowment enters the
battlefield, gain 2 life for each Angel you control.
Whenever a nontoken angel enters the battlefield
under your control, create a 4/4 white Angel
creature token with flying.
Sacrifice 3 Angels: Exile Empyrial Endowment,
return it to the battlefield under your control at
the beginning of the next end step. Scry 3