Bottle Gnomes

Sacrifice Bottle Gnomes: You gain 3 life.

Foundry Inspector

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

{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.

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

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

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

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