Thought Monitor

Affinity for artifacts
Flying
When Thought Monitor enters, draw two cards.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Llanowar Elves

The Mycosynth Gardens

{T}: Add {C}.
{1}, {T}: Add one mana of any color.
{X}, {T}: The Mycosynth Gardens becomes a copy of target nontoken artifact you control with mana value X.

Island

Mirrorworks

Whenever another nontoken artifact you control enters, you may pay {2}. If you do, create a token that's a copy of that artifact.

Splinter

Exile target artifact. Search its controller's graveyard, hand, and library for all cards with the same name as that artifact and exile them. Then that player shuffles.

Mana Leak

Counter target spell unless its controller pays {3}.

Oxidize

Destroy target artifact. It can't be regenerated.

Forest

Botanical Sanctum

Botanical Sanctum enters tapped unless you control two or fewer other lands.
{T}: Add {G} or {U}.

Natural State

Destroy target artifact or enchantment with mana value 3 or less.

Grapple with the Past

Mill three cards, then you may return a creature or land card from your graveyard to your hand. (To mill three cards, put the top three cards of your library into your graveyard.)

Artificer's Epiphany

Draw two cards. If you control no artifacts, discard a card.

Liquimetal Coating

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

Sculpting Steel

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

Myr Landshaper

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

Birds of Paradise

Myr Servitor

At the beginning of your upkeep, if Myr Servitor is on the battlefield, each player returns all cards named Myr Servitor from their graveyard to the battlefield.

Frogmyr Enforcer

Prototype {3}{R} — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Myr Enforcer

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