City of Traitors

If you play any land, sacrifice City of Traitors. {T}: Add two colorless mana to your mana pool.

Sensei's Divining Top

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Magus of the Moon

Nonbasic lands are Mountains.

Pyroblast

Counter target spell if it is blue or destroy target permanent if it is blue.

Phyrexian Revoker

As Phyrexian Revoker enters the battlefield, name a nonland card. Activated abilities of sources with the chosen name can't be activated.

Spellskite

{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)

Simian Spirit Guide

Remove Simian Spirit Guide in your hand from the game: Add {R} to your mana pool.

Great Furnace

(Great Furnace isn't a spell.) {T}: Add {R} to your mana pool.

Imperial Recruiter

When Imperial Recruiter enters the battlefield, search your library for a creature card with power 2 or less, reveal it, and put it into your hand. Then shuffle your library.

Ratchet Bomb

{T}: Put a charge counter on Ratchet Bomb. {T}, Sacrifice Ratchet Bomb: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Ratchet Bomb.

Painter's Servant

As Painter's Servant comes into play, choose a color. All cards that aren't in play, spells, and permanents are the chosen color in addition to their other colors.

Ensnaring Bridge

Each creature with power greater than the number of cards in your hand cannot attack.

Grindstone

{3}, {T}: Put the top 2 cards of target player's library into that player's graveyard. If both cards share at least one color, repeat this process.

Blood Moon

All non-basic lands are now basic mountains.

Red Elemental Blast

Counters a blue spell being cast or destroys a blue card in play.

Goblin Welder

{T}: Choose a player. Exchange target artifact that player controls with target artifact in that player's graveyard.

Scalding Tarn

Ancient Tomb

Chandra, Torch of Defiance

Mountain

({T}: Add {R}.)