Myr Enforcer

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

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Ancient Den

Wind-Scarred Crag

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {R} or {W}.

Feldon's Cane

{T}, Exile this artifact: Shuffle your graveyard into your library.

Temur Battle Rage

Target creature gains double strike until end of turn.
Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

Glint Hawk

Flying
When Glint Hawk enters, sacrifice it unless you return an artifact you control to its owner's hand.

Ornithopter

Atog

Sacrifice an artifact: Atog gets +2/+2 until end of turn.

Frogmite

Great Furnace

Plains

Galvanic Blast

Galvanic Blast deals 2 damage to any target.
Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.

Navigator's Compass

When Navigator's Compass enters, you gain 3 life.
{T}: Until end of turn, target land you control becomes the basic land type of your choice in addition to its other types.

Shield Sphere

Defender
Whenever Shield Sphere blocks, put a -0/-1 counter on it.

Fragmentize

Destroy target artifact or enchantment with mana value 4 or less.

Welding Jar

Sacrifice Welding Jar: Regenerate target artifact.

Ardent Recruit

Metalcraft — Ardent Recruit gets +2/+2 as long as you control three or more artifacts.