Evard's Black Tentacles

When Evard's Black Tentacles enters the battlefield you may tap up to 3 creatures your
opponent controls. During your upkeep place a
-1/-1 counter on each creature tapped this way.
They do not untap while Evard's Black Tentacles remains on the battlefield
{5} pay {5} life to destroy Evard's Black Tentacles. Anyone may pay this but only during their upkeep