Regulos the Destroyer

When Regulos the Destroyer enters the battlefield, you may destroy up to 3 creatures. If any creatures that died this way were under your control you gain life equal to that creature's mana cost. If any creatures were destroyed this way, Regulos the Destoyer gains Indestructible for a number of turns equal to the number of creatures that died.
{t}{3}{b}{r} If Regulos the Destroyer dies, you may return him to the battlefield by sacrificing life equal to the life gained from his effect.