Shelob, Dread Weaver

Whenever a nontoken creature an opponent controls dies, exile it.
{2}{b}, Put a creature card exiled with Shelob, Dread Weaver into its owner's graveyard: Put
two +1/+1 counters on Shelob. Draw a card.
{x}{1}{b}: Put target creature card with mana value X exiled with Shelob onto the battlefield tapped under your control.