Krark-Clan Ironworks

Sacrifice an artifact: Add {2} to your mana pool.

Grove of the Burnwillows

{T}: Add {1} to your mana pool. {PT}: Add {R} or {G} to your mana pool. Each opponent gains 1 life.

Buried Ruin

{T}: Add {1} to your mana pool. {2}, {T}, Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

Chromatic Sphere

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

Ichor Wellspring

When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield, draw a card.

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.

Myr Retriever

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

Pyrite Spellbomb

{R}, Sacrifice Pyrite Spellbomb: Pyrite Spellbomb deals 2 damage to target creature or player. {1}, Sacrifice Pyrite Spellbomb: Draw a card.

Darksteel Citadel

Indestructible (Effects that say "destroy" don't destroy this land.) {T}: Add {1} to your mana pool.

Ancient Stirrings

Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

Mox Opal

Metalcraft — {T}: Add one mana of any color to your mana pool. Activate this ability only if you control three or more artifacts.

Yavimaya Coast

{T}: Add {1} to your mana pool. {T}: Add {G} or {U} to your mana pool. Yavimaya Coast deals 1 damage to you.

Chromatic Star

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color to your mana pool. When Chromatic Star is put into a graveyard from play, draw a card.

Lightning Bolt

Lightning Bolt does 3 damage to one target.

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Mind Stone

Terrarion

Inventors' Fair

Scrap Trawler

Negate

Counter target noncreature spell.

Island

({T}: Add {U}.)

Forest

({T}: Add {G}.)