Kela's Sextant

{t}: Add {1} of any color. Lose 1 life.
{1}, {t}: Reveal the top card of your library. If it is a land, put it onto the battlefield tapped. Other- wise, exile it.
Sacrifice Kela's Sextant: Lose half you life. Put all cards exiled by Kela's Sextant into your hand. Until end of turn, you may cast one spell without paying its mana cost.