Elvish Spirit Guide

If Elvish Spirit Guide is in your hand, you may remove it from the game to add {G} to your mana pool. Play this ability as an interrupt.

Rite of Flame

Add {R}{R} to your mana pool, then add {R} to your mana pool for each card named Rite of Flame in each graveyard.

Tinder Wall

{0}: Sacrifice Tinder Wall to add {R}{R} to your mana pool. Play this ability as an interrupt. {R}: Sacrifice Tinder Wall to have it deal 2 damage to target creature it blocks.

Pyretic Ritual

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

Land Grant

If you have no land cards in hand, you may reveal your hand instead of paying Land Grant's mana cost. Search your library for a forest card and put that card into your hand. Then shuffle your library.

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.

Goblin Charbelcher

{3}, {T}: Reveal cards from the top of your library until you reveal a land card. Goblin Charbelcher deals damage equal to the number of nonland cards revealed this way to target creature or player. If the revealed land card was a Mountain, Goblin Charbelcher deals double that damage instead. Put the revealed cards on the bottom of your library in any order.

Desperate Ritual

Add {R}{R}{R} to your mana pool. Splice onto Arcane {1}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Seething Song

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

Simian Spirit Guide

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

Burning Wish

You may choose a sorcery card you own from outside the game, reveal that card, and put it into your hand. Remove Burning Wish from the game.

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.

Gitaxian Probe

({U/P} can be paid with either {U} or 2 life.) Look at target player's hand. Draw a card.

Xantid Swarm

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

Lotus Petal

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

Empty the Warrens

Put two 1/1 red Goblin creature tokens into play. Storm (When you play this spell, copy it for each spell played before it this turn.)

Taiga

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

Hazoret's Undying Fury