Chainer, Dementia Master

Mana cost: {3}{B}{B}

Legendary Creature — Human Minion

All Nightmares get +1/+1. {B}{B}{B}, Pay 3 life: Put target creature card from a graveyard onto the battlefield under your control. That creature is black and is a Nightmare in addition to its other creature types. When Chainer leaves the battlefield, exile all Nightmares.