Shelob, Dread Weaver

Legendary Creature — Spider Demon

Whenever a nontoken creature an opponent controls dies, exile it. {2}{B}, Put a creature card exiled with Shelob 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.