Thopter Foundry

{1}: Add {c} for each Thopter you control.
{2}, {t}: Create a 1/1 colorless Thopter artifact
creature token with flying.
Whenever a Thopter you control dies, you
may pay {1}. If you do, add one mana of any color.
"From the hum of the foundry comes the lifeblood
of our invention."