I may finally have built a speedy myr deck! Semblance Anvil and Prototype Portal both circumvent the mana-source restriction on Myr Superion (reducing cost to 0 and putting a copy into play rather than casting, respectively). While I have no white spells, the Shrine of Loyal Legions can make a solid assault force on the fly. The little bits of equipment are there for specific purposes, as myrs tend to be smaller, and I need a way to destroy other cards directly. The 2/18/14/2/0/2/2 averages a deceptive 2.85 due to the affinity for artifacts at the top end, though it still has turn-one issues.