Sun-In-Shadow

At the end of your turn, if you have no cards in hand, you may search your library for a card, put it into your hand, then shuffle your library.
{1}{b}{b}; Discard a card: You gain life equal to discarted card mana cost. If you discarted 3 cards this turn, you may draw 4 cards.
{1}{u}{g};{t}: Tap target permanent.