Loray, Scheming Snake

+2: You may sacrifice a creature. If you do, return another target creature card from your graveyard to your hand.
-X: You may reveal up to two cards with total converted mana cost X from your hand. If you do, target opponent loses X life and you gain X life.
-5: Tap each land target player controls. You gain 2 life for each tapped land that player controls.