Swamp

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pestilence.
{B}: Pestilence deals 1 damage to each creature and each player.

Vile Rebirth

Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token.

Bog Raiders

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Bog Smugglers

Contaminated Ground

Enchant land
Enchanted land is a Swamp.
Whenever enchanted land becomes tapped, its controller loses 2 life.

Mirrodin Avenged

Destroy target creature that was dealt damage this turn.
Draw a card.

You Are Already Dead

Banewasp Affliction

Enchant creature
When enchanted creature dies, that creature's controller loses life equal to its toughness.

Shamble Back

Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token. You gain 2 life.

Fatal Blow

Destroy target creature that was dealt damage this turn. It can't be regenerated.