Rise from the Grave

For each player, choose a creature card in that player's graveyard. Put those cards onto the battlefield under your control. They're black Zombies in addition to their other colors and types and they gain decayed. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)

Return up to two target creature cards from your graveyard to the battlefield. Each of those creatures is a black Zombie in addition to its other colors and types. Put Ever After on the bottom of its owner's library.

Put target creature card from a graveyard onto the battlefield under your control. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Put target creature card from a graveyard onto the battlefield under your control.

+1: Create a 2/2 black Zombie creature token. Mill two cards.

−3: Return target creature card from your graveyard to the battlefield. That creature is a black Zombie in addition to its other colors and types.

−7: Destroy all non-Zombie creatures.

All Nightmares get +1/+1.

, 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.