Tidespout Tyrant

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

Snow-Covered Island

{T}: Add {U} to your mana pool.

Snow-Covered Swamp

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

Grave Titan

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

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.

Massacre

If an opponent controls a plains and you control a swamp, you may play Massacre without paying its mana cost. All creatures get -2/-2 until end of turn.

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.

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.

Pithing Needle

As Pithing Needle comes into play, name a card. Activated abilities of sources with the chosen name can't be played unless they're mana abilities.

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.

Show and Tell

Each player may choose an artifact, creature, enchantment, or land card in his or her hand and put that permanent into play.

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.

Iona, Shield of Emeria

Flying As Iona, Shield of Emeria enters the battlefield, choose a color. Your opponents can't cast spells of the chosen color.

Bloodstained Mire

Polluted Delta

Faithless Looting

Collective Brutality