Memnarch, Thopter Foundry

{t}: Add {1} to your mana pool.
{2}, {t}: Put a 1/1 colorless Thopter artifact creature token with flying onto the battlefield.
{5}, {t}: Put a +1/+1 counter on each artifact creature you control.
Sacrifice 3 Thopter tokens: Memnarch, Thopter Foundry gains indestructible until end of turn.