Scythan Tracker

When Scythan Tracker enters the battlefield, you may search your library for a card and exile it face down. If you do, target opponent chooses a color, then turn the exiled card face up. If the card is the chosen color, you lose half you life total, rounded up. Otherwise,
put it on your hand and untap all lands you control.
"Found food. It a good food. Pack be happy."