Etherium Sculptor

Artifact spells you cast cost {1} less to cast.

Golden Egg

When Golden Egg enters, draw a card.
{1}, {T}, Sacrifice Golden Egg: Add one mana of any color.
{2}, {T}, Sacrifice Golden Egg: You gain 3 life.

Whenever an artifact you control enters, Reckless Fireweaver deals 1 damage to each opponent.

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

Spare Supplies enters tapped.
When Spare Supplies enters, draw a card.
{2}, {T}, Sacrifice Spare Supplies: Draw a card.

Lightning Bolt deals 3 damage to any target.

When Prophetic Prism enters, draw a card.
{1}, {T}: Add one mana of any color.

When Workshop Assistant dies, return another target artifact card from your graveyard to your hand.