Lion's Eye Diamond

Sacrifice Lion's Eye Diamond, Discard your hand: Add three mana of any one color to your mana pool. Play this ability as a mana source.

Chromatic Sphere

{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color to your mana pool. Draw a card.

Chain of Vapor

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land. If the player does, he or she may copy this spell and may choose a new target for that copy.

Tendrils of Agony

Target player loses 2 life and you gain 2 life. Storm (When you play this spell, copy it for each spell played before it this turn. You may choose new targets for the copies.)

Xantid Swarm

FlyingWhenever Xantid Swarm attacks, defending player can't play spells this turn.

Mystical Tutor

Search your library for an instant or sorcery card and reveal that card. Shuffle your library, then put the card on top of it.

Intuition

Search your library for any three cards and reveal them to target opponent. He or she chooses one. Put that card into your hand and the rest into your graveyard. Shuffle your library afterwards.

Lotus Petal

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

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.

Cabal Ritual

Add {B}{B}{B} to your mana pool. Threshold - Instead add {B}{B}{B}{B}{B} to your mana pool. (You have threshold if seven or more cards are in your graveyard.)

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.

Tropical Island

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

Engineered Plague

When Engineered Plague comes into play, choose a creature type. All creatures of the chosen type get -1/-1.

Dark Ritual

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

Ill-Gotten Gains

Remove Ill-Gotten Gains from the game. All players discard their hands, then each player puts up to three cards from his or her graveyard into his or her hand.

Impulse

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library. Shuffle your library afterwards.

Flooded Strand

Polluted Delta

Brainstorm

Echoing Truth

Strategic Planning

Island

({T}: Add {U}.)

Swamp

({T}: Add {B}.)