Captain of the Blue Flame

Prowess
Instant and sorcery spells you cast cost {2} less to cast.
Whenever you cast a spell, you may put it on the
bottom of its owners library. If you do, reveal cards
from the top of your library until you reveal a
nonland card. You may cast that card without
paying its mana cost. Then put all revealed cards not
cast this way on the bottom of your library in a
random order.