Chainer, Dementia Master [Commander Masters]

Description

Set:	Commander Masters
Type:	Legendary Creature — Human Minion
Rarity:	Rare
Cost:	{3}{B}{B}

All Nightmares get +1/+1.

BBB, 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, Dementia Master leaves the battlefield, exile all Nightmares.