Geonosian Droid Factory

When Geonosian Droid Factory enters the battlefield, create four 1/1 colorless
Myr artifact creature tokens.
{t}: Put a 1/1 colorless Myr artifact creature
token onto the battlefield.
{t}, Tap five untapped Myr you control:
Search your library for a Myr creature card,
put it onto the battlefield & shuffle your library.