Swamp

Deathbloom Thallid

When this creature dies, create a 1/1 green Saproling creature token.

Meteor Golem

When this creature enters, destroy target nonland permanent an opponent controls.

Gravewaker

Flying (This creature can't be blocked except by creatures with flying or reach.)
{5}{B}{B}: Return target creature card from your graveyard to the battlefield tapped.

Rise from the Grave

Put target creature card from a graveyard onto the battlefield under your control. That creature is a black Zombie in addition to its other colors and types.

Gravedigger

When this creature enters, you may return target creature card from your graveyard to your hand.

Yargle, Glutton of Urborg

Skulduggery

Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1.

Vampire Sovereign

Flying
When this creature enters, target opponent loses 3 life and you gain 3 life.

Hired Blade

Flash (You may cast this spell any time you could cast an instant.)

Diregraf Ghoul

Walking Corpse

Open the Graves

Whenever a nontoken creature you control dies, create a 2/2 black Zombie creature token.

Death Baron

Skeletons you control and other Zombies you control get +1/+1 and have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.)

Murder

Strangling Spores

Target creature gets -3/-3 until end of turn.

Doomed Dissenter

When this creature dies, create a 2/2 black Zombie creature token.

Skymarch Bloodletter

Flying
When this creature enters, target opponent loses 1 life and you gain 1 life.