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Rockfall Vale enters the battlefield tapped unless you control two or more other lands. {T}: Add {R} or {G}.

{T}: Add one mana of any color that a land an opponent controls could produce.

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in yo...

{1}, {T}: Add {W}{B}.

As Shineshadow Snarl enters the battlefield, you may reveal a Plains or Swamp card from your hand. If you don't, Shineshadow Snarl enters the battl...

Simic Guildgate enters the battlefield tapped. {T}: Add {G} or {U}.

{U}, Sacrifice Implement of Examination: Draw a card. When Implement of Examination is put into a graveyard from the battlefield, draw a card.

{R}, Sacrifice Implement of Combustion: It deals 1 damage to target player or planeswalker. When Implement of Combustion is put into a graveyard fr...

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

When Filigree Crawler dies, create a 1/1 colorless Thopter artifact creature token with flying.

Devoid (This card has no color.) Flash (You may cast this spell any time you could cast an instant.) When Void Grafter enters the battlefield, anot...

When you cast this spell, exile two target permanents. Indestructible Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the to...

Devoid (This card has no color.) Mindmelter can't be blocked. {3}{C}: Target opponent exiles a card from their hand. Activate only as a sorcery. ...

{7}: Create a token that's a copy of target artifact. That token gains haste. Exile it at the beginning of the next end step.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Barricade Bre...

{T}: Add {B} or {R}. {B}{R}, {T}, Sacrifice Rakdos Cluestone: Draw a card.

{1}{B}: Augmenting Automaton gets +1/+1 until end of turn.

{T}: Add {C}. {T}: Add {G} or {U}. Talisman of Curiosity deals 1 damage to you.

{T}: Add {C}{C}.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped crea...

At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.

Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abi...

{T}: Draw a card. Activate only if you created a token this turn. {8}, {T}, Sacrifice Idol of Oblivion: Create a 10/10 colorless Eldrazi creature t...