Myr are artifact creatures best known for mana production, artifact synergies, and assembling surprisingly dangerous little robot armies. Many Myr function as mana dorks before becoming useful pieces of larger combos.
Myr Turbine produces tokens and can search for additional Myr, while Myr Matrix supplies both tokens and a typal boost. Two Myr Galvanizers alongside the right mana-producing Myr can even generate unlimited mana.