River of Tears

{T}: Add {U} to your mana pool. If you played a land this turn, add {B} to your mana pool instead.

Snapcaster Mage

Flash When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Liliana of the Veil

+1: Each player discards a card. -2: Target player sacrifices a creature. -6: Separate all permanents target player controls into two piles. That player sacrifices all permanents in the pile of his or her choice.

Spell Snare

Counter target spell with converted mana cost 2.

Engineered Explosives

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

Extirpate

Split second (As long as this spell is on the stack, players can't play spells or activated abilities that aren't mana abilities.) Choose target card in a graveyard other than a basic land. Search its owner's graveyard, hand, and library for all cards with the same name as that card and remove them from the game. Then that player shuffles his or her library.

Damnation

Mutavault

{T}: Add {1} to your mana pool. {1}: Mutavault becomes a 2/2 creature with all creature types until end of turn. It's still a land.

Cryptic Command

Spellstutter Sprite

Flash Flying When Spellstutter Sprite enters the battlefield, counter target spell with converted mana cost X or less, where X is the number of Faeries you control.

Bitterblossom

At the beginning of your upkeep, you lose 1 life and put a 1/1 black Faerie Rogue creature token with flying onto the battlefield.

Vendilion Clique

Flash Flying When Vendilion Clique enters the battlefield, look at target player's hand. You may choose a nonland card from it. If you do, that player reveals the chosen card, puts it on the bottom of his or her library, then draws a card.

Collective Blessing

Creatures you control get +3/+3.

Inquisition of Kozilek

Target player reveals his or her hand. You choose a nonland card from it with converted mana cost 3 or less. That player discards that card.

Darkslick Shores

Darkslick Shores enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {U} or {B} to your mana pool.

Nihil Spellbomb

{T}, Sacrifice Nihil Spellbomb: Exile all cards from target player's graveyard. When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

Mana Leak

Counter target spell unless its caster pays an additional {3}.

Creeping Tar Pit

Creeping Tar Pit enters the battlefield tapped. {T}: Add {U} or {B} to your mana pool. {1}{U}{B}: Until end of turn, Creeping Tar Pit becomes a 3/2 blue and black Elemental creature and is unblockable. It's still a land.

Jace, the Mind Sculptor

+2: Look at the top card of target player's library. You may put that card on the bottom of that player's library. 0: Draw three cards, then put two cards from your hand on top of your library in any order. -1: Return target creature to its owner's hand. -12: Exile all cards from target player's library, then that player shuffles his or her hand into his or her library.

Marsh Flats

Misty Rainforest

Polluted Delta

Watery Grave

Kalitas, Traitor of Ghet

Fatal Push

Negate

Counter target noncreature spell.

Disfigure

Target creature gets -2/-2 until end of turn.

Opt

Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) Draw a card.

Field of Ruin

{T}: Add {C}. {2}, {T}, Sacrifice Field of Ruin: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles their library.

Island

({T}: Add {U}.)

Swamp

({T}: Add {B}.)