Kreomat, The Waves Risen

When Kreomat, The Waves Risen enters the battlefield, take control of target creature. Sacrifice that creature at the beginning of your next end step. Untap it. It gains haste.
{t}: Add {u}{u} to your mana pool. You gain 2 life. When you activate this ability, you may pay {2} and 2 life. If you do, draw a card.