Tidespout Tyrant

Flying Whenever you play a spell, return target permanent to its owner's hand.

Unmask

You may remove a black card in your hand from the game instead of paying Unmask's mana cost. Look at target player's hand and choose a nonland card from it. That player discards that card.

Stronghold Gambit

Each player chooses a card in his or her hand. Then each player reveals his or her chosen card. The owner of the creature card revealed this way with the lowest converted mana cost puts that card into play. If two or more creature cards are tied for lowest cost, those cards are put into play.

Chancellor of the Annex

You may reveal this card from your opening hand. If you do, when each opponent casts his or her first spell of the game, counter that spell unless that player pays {1}. Flying Whenever an opponent casts a spell, counter it unless that player pays {1}.

Elesh Norn, Grand Cenobite

Vigilance Other creatures you control get +2/+2. Creatures your opponents control get -2/-2.

Chrome Mox

Imprint — When Chrome Mox enters the battlefield, you may exile a nonartifact, nonland card from your hand. {T}: Add one mana of any of the exiled card's colors to your mana pool.

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.

Badlands

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

Underground Sea

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

Animate Dead

Any creature in either player's graveyard comes into play on your side with -1 to its original power. If this enchantment is removed, or at end of game, target creature is returned to its owner's graveyard. Target creature may be killed as normal.

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.

Bloodstained Mire

Marsh Flats

Polluted Delta

Faithless Looting

Swamp

({T}: Add {B}.)