Alayel, Covenant Unleashed

Eminence-Angel spells you cast cost {1} less to cast.
Flying, Vigilance, Indestructible, Ward {3}, Devoid
This spell costs {x} less to cast; X equals the highest
mana value among Angels you control.
When you cast this spell, exile two non-Angel,
non-land permanents.
{x}{w}{w}{u}{b}{r}{g}: Sacrifice X Angels: Destroy up
to X target non-land permanents, draw X cards,
gain three times X life, and each opponent
discards X cards.