Ugin, Eye of the Storms

When you cast this spell, exile up to one target permanent that’s one or more colors.
Whenever you cast a colorless spell, exile up to one target permanent that’s one or more colors.
+2: You gain 3 life and draw a card.
0: Add .
−11: Search your library for any number of colorless nonland cards, exile them, then shuffle. Until end of turn, you may cast those cards without paying their mana costs.