Tinker

As an additional cost to cast this spell, sacrifice an artifact.
Search your library for an artifact card, put that card onto the battlefield, then shuffle.

Blightsteel Colossus

Trample, infect, indestructible
If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

Mox Opal

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

Voltaic Key

Time Vault

Time Vault enters tapped.
Time Vault doesn't untap during your untap step.
If you would begin your turn while Time Vault is tapped, you may skip that turn instead. If you do, untap Time Vault.
{T}: Take an extra turn after this one.

Tolarian Academy

{T}: Add {U} for each artifact you control.

Mox Pearl

Mox Ruby

Mox Emerald

Ancestral Recall

Time Walk

Thoughtcast

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

Mox Jet

Mox Sapphire

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Paradox Engine

Whenever you cast a spell, untap all nonland permanents you control.

Vampiric Tutor

Search your library for a card, then shuffle and put that card on top. You lose 2 life.