Headless Skaab

As an additional cost to cast this spell, exile a creature card from your graveyard.
Headless Skaab enters the battlefield tapped.

Island

Armored Skaab

When Armored Skaab enters the battlefield, mill four cards.

Relentless Skaabs

As an additional cost to cast this spell, exile a creature card from your graveyard.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Skaab Ruinator

As an additional cost to cast this spell, exile three creature cards from your graveyard.
Flying
You may cast Skaab Ruinator from your graveyard.

Geralf's Masterpiece

Flying
Geralf's Masterpiece gets -1/-1 for each card in your hand.
{3}{U}, Discard three cards: Return Geralf's Masterpiece from your graveyard to the battlefield tapped.

Rooftop Storm

You may pay {0} rather than pay the mana cost for Zombie creature spells you cast.