Demonlord of Lost Argoth

Flying, haste
Whenever a creature an opponent controls dies, that player loses 1 life. Then if that player has lost 5 or more life this turn, rummage. (You may discard a card. If you do, draw a card.)
{3}{g}: Other creatures you control get -1/-1 until end of turn. Destroy target artifact or enchantment. Activate only at sorcery speed.