Unstable Obelisk

{T}: Add {C}.
{7}, {T}, Sacrifice this artifact: Destroy target permanent.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Mind Stone

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

Myr Enforcer

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

Ornithopter of Paradise

Frogmite

Perilous Myr

When this creature dies, it deals 2 damage to any target.

Virulent Silencer

Whenever a nontoken artifact creature you control deals combat damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

Omega Myr

Voltaic Servant

At the beginning of your end step, untap target artifact.

Crashing Drawbridge

Defender
{T}: Creatures you control gain haste until end of turn.

Manakin

Pili-Pala

Flying
{2}, {Q}: Add one mana of any color. ({Q} is the untap symbol.)

Drill-Skimmer

Flying
This creature has shroud as long as you control another artifact creature. (It can't be the target of spells or abilities.)

Arcbound Hybrid

Haste
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Clockwork Fox

When this creature leaves the battlefield, you draw two cards and each opponent draws a card.

Snapsail Glider

Metalcraft — This creature has flying as long as you control three or more artifacts.

Alloy Myr

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.)

Razorgrass Screen

Defender (This creature can't attack.)
This creature blocks each combat if able.

Ur-Golem's Eye

Razorfield Rhino

Metalcraft — This creature gets +2/+2 as long as you control three or more artifacts.

Myr Landshaper

{T}: Target land becomes an artifact in addition to its other types until end of turn.

Chrome Companion

Whenever this creature becomes tapped, you gain 1 life.
{2}, {T}: Put target card from a graveyard on the bottom of its owner's library.

Dross Scorpion

Whenever this creature or another artifact creature dies, you may untap target artifact.

Shardless Outlander

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Basic landcycling {2} ({2}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Welding Jar

Sacrifice this artifact: Regenerate target artifact.

Powerstone Shard

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

Chrome Steed

Iron Bully

Menace (This creature can't be blocked except by two or more creatures.)
When this creature enters, put a +1/+1 counter on target creature.

Meteorite

When this artifact enters, it deals 2 damage to any target.
{T}: Add one mana of any color.

Gingerbrute

Haste (This creature can attack and {T} as soon as it comes under your control.)
{1}: This creature can't be blocked this turn except by creatures with haste.
{2}, {T}, Sacrifice this creature: You gain 3 life.

Myr Retriever

When this creature dies, return another target artifact card from your graveyard to your hand.

Arcbound Stinger

Flying
Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Letter of Acceptance

{T}: Add one mana of any color.
{2}, {T}, Sacrifice this artifact: Draw a card.

Stone Retrieval Unit

When this creature enters, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

Sisay's Ring

Maelstrom Colossus

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Executioner's Hood

Equipped creature has intimidate. (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Hedron Crawler

{T}: Add {C}. ({C} represents colorless mana.)

Darksteel Citadel

Goldvein Pick

Equipped creature gets +1/+1.
Whenever equipped creature deals combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Alpha Myr

Iron Apprentice

This creature enters with a +1/+1 counter on it.
When this creature dies, if it had counters on it, put those counters on target creature you control.

Hovermyr

Hedron Scrabbler

Landfall — Whenever a land you control enters, this creature gets +1/+1 until end of turn.

Myr Quadropod

{3}: Switch this creature's power and toughness until end of turn.

Myr Scrapling

Sacrifice this creature: Put a +1/+1 counter on target creature.

Honored Heirloom

{T}: Add one mana of any color.
{2}, {T}: Exile target card from a graveyard.

Walking Atlas

{T}: You may put a land card from your hand onto the battlefield.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Ornithopter

Chrome Cat

Adventuring Gear

Landfall — Whenever a land you control enters, equipped creature gets +2/+2 until end of turn.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Ancestral Statue

When this creature enters, return a nonland permanent you control to its owner's hand.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Scour from Existence

Rusted Relic

Metalcraft — This artifact is a 5/5 Golem artifact creature as long as you control three or more artifacts.

Tooth of Chiss-Goria

Flash
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{T}: Target creature gets +1/+0 until end of turn.

Ichorclaw Myr

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever this creature becomes blocked, it gets +2/+2 until end of turn.