Cabal Coffers

{2}, {T}: Add {B} for each Swamp you control.

Swamp

Gilded Lotus

Sorin Markov

+2: Sorin Markov deals 2 damage to any target and you gain 2 life.
−3: Target opponent's life total becomes 10.
−7: You control target player during that player's next turn.

Bloodgift Demon

Flying
At the beginning of your upkeep, target player draws a card and loses 1 life.

Squelching Leeches

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.

Sign in Blood

Target player draws two cards and loses 2 life.

Morbid Plunder

Return up to two target creature cards from your graveyard to your hand.

Pestilence Demon

Flying
{B}: This creature deals 1 damage to each creature and each player.

Grasp of Darkness

Target creature gets -4/-4 until end of turn.

Royal Assassin

Fell

Visara the Dreadful

Flying
{T}: Destroy target creature. It can't be regenerated.

Blood Tithe

Each opponent loses 3 life. You gain life equal to the life lost this way.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Defile

Target creature gets -1/-1 until end of turn for each Swamp you control.

Ambition's Cost

You draw three cards and you lose 3 life.

Mark of the Vampire

Enchant creature
Enchanted creature gets +2/+2 and has lifelink.

Exquisite Blood

Whenever an opponent loses life, you gain that much life.

Thrashing Wumpus

{B}: This creature deals 1 damage to each creature and each player.

Dark Ritual

Nightmare

Flying (This creature can't be blocked except by creatures with flying or reach.)
Nightmare's power and toughness are each equal to the number of Swamps you control.

Languish

All creatures get -4/-4 until end of turn.

Nantuko Shade

{B}: This creature gets +1/+1 until end of turn.

Murder

Damnation

Destroy all creatures. They can't be regenerated.

Typhoid Rats

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)