Palladium Myr

Iron Spider, Stark Upgrade

Vigilance
{T}: Put a +1/+1 counter on each artifact creature and/or Vehicle you control.
{2}, Remove two +1/+1 counters from among artifacts you control: Draw a card.

Lita, Mechanical Engineer

Vigilance
At the beginning of your end step, untap each other artifact creature you control.
{3}{W}, {T}: Create a 5/5 colorless Vehicle artifact token named Zeppelin with flying and crew 3. (It has "Tap any number of creatures you control with total power 3 or more: This token becomes an artifact creature until end of turn.")

Myr Propagator

{3}, {T}: Create a token that's a copy of this creature.

Gold Myr

Alloy Myr

Automated Artificer

{T}: Add {C}. Spend this mana only to activate an ability or cast an artifact spell.

Ornithopter of Paradise

Steel Overseer

{T}: Put a +1/+1 counter on each artifact creature you control.