Enchantment, 2WU (4)

Sacrifice Stormcaller's Boon: Creatures you control gain flying until end of turn.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Illus. Brandon Kitkouski