Power Depot

This land enters tapped.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts.
Modular 1

Cephalopod Sentry

Flying
Cephalopod Sentry's power is equal to the number of artifacts you control.

Plains

Thought Monitor

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When this creature enters, draw two cards.

Sculpting Steel

You may have this artifact enter as a copy of any artifact on the battlefield.

Silverbluff Bridge

This land enters tapped.
Indestructible
{T}: Add {U} or {R}.

Goldmire Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {B}.

Powerstone Shard

{T}: Add {C} for each artifact you control named Powerstone Shard.

Metalwork Colossus

This spell costs {X} less to cast, where X is the total mana value of noncreature artifacts you control.
Sacrifice two artifacts: Return this card from your graveyard to your hand.

Servo Schematic

When this artifact enters or is put into a graveyard from the battlefield, create a 1/1 colorless Servo artifact creature token.

Gearseeker Serpent

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{5}{U}: This creature can't be blocked this turn.

Thornglint Bridge

This land enters tapped.
Indestructible
{T}: Add {G} or {W}.

Mistvault Bridge

This land enters tapped.
Indestructible
{T}: Add {U} or {B}.

Sojourner's Companion

Affinity for artifacts
Artifact landcycling {2} ({2}, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)

Ichor Wellspring

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

Voyage Home

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
You draw three cards and gain 3 life.

Island

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.

Ethersworn Sphinx

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card with lesser mana value. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Flight Spellbomb

{T}, Sacrifice this artifact: Target creature gains flying until end of turn.
When this artifact is put into a graveyard from the battlefield, you may pay {U}. If you do, draw a card.