Mouser Foundry

When this artifact enters or leaves the battlefield, create a 1/1 colorless Robot artifact creature token.
{4}{R}, Sacrifice this artifact: It deals 3 damage to target creature.

Springleaf Drum

{T}, Tap an untapped creature you control: Add one mana of any color.

Chrome Dome

Other artifact creatures you control get +1/+0.
{5}: Create a token that's a copy of another target artifact you control. That token gains haste. Sacrifice it at the beginning of the next end step.

Mechanized Ninja Cavalry

When this creature enters, create a 1/1 colorless Robot artifact creature token.

Improvised Arsenal

Equipped creature gets +1/+0 for each artifact you control.
{4}{R}: Create a token that's a copy of this Equipment.
Equip {R}

Ravenous Robots

Whenever you cast an artifact spell, create a 1/1 colorless Robot artifact creature token.
{R}, {T}: Creature tokens you control gain haste until end of turn.