Lake of the Dead

When Lake of the Dead comes into play, sacrifice a swamp or bury Lake of the dead. {T}: Add {B} to your mana pool. {T}: Sacrifice a swamp to add {B}{B}{B}{B} to your mana pool.

Dark Depths

Dark Depths comes into play with ten ice counters on it. {3}: Remove an ice counter from Dark Depths. When Dark Depths has no ice counters on it, sacrifice it. If you do, put an indestructible legendary 20/20 black Avatar creature token with flying named Marit Lage into play.

Toxic Deluge

As an additional cost to cast Toxic Deluge, pay X life. All creatures get -X/-X until end of turn.

Thespian's Stage

{T}: Add {1} to your mana pool. {2}, {T}: Thespian's Stage becomes a copy of target land and gains this ability.

Unburial Rites

Return target creature card from your graveyard to the battlefield. Flashback {3}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Grave Titan

Deathtouch Whenever Grave Titan enters the battlefield or attacks, put two 2/2 black Zombie creature tokens onto the battlefield.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Entomb

Search your library for a card and put that card into your graveyard. Then shuffle your library.

Griselbrand

Flying, lifelink Pay 7 life: Draw seven cards.

Lotus Petal

Sacrifice Lotus Petal: Add one mana of any color to your mana pool. Play this ability as a mana source.

Reanimate

Put target creature card from any graveyard into play under your control. Lose life equal to that creature's total casting cost.

Thoughtseize

Target player reveals his or her hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Scrubland

Counts as both plains and swamp and is affected by spells that affect either. Tap to add either {W} or {B} to your mana pool.

Exhume

Each player chooses a creature card in his or her graveyard and puts that creature into play.

Dark Ritual

Add {B}{B}{B} to your mana pool.

Vampire Hexmage

First strike Sacrifice Vampire Hexmage: Remove all counters from target permanent.

Marsh Flats

Verdant Catacombs

Collective Brutality

Swamp

({T}: Add {B}.)