It is rare that I produce a true colorless deck, but here I have one. The land are a full set of Urza's lands and all loci I own. Sol Ring and Æther Vial give me a boost on casting. The focus is on infect, but I am using a few (7) arcbound cards to give a little bump. Prototype Portal could be devastating if I can get the right thing imprinted (Core Prowler, Corpse Cur, and Phyrexian Juggernaut are all good options). the (2)/9/18/2/6/0/3 curve is actually quite easy with these mana sources, and it gives a reasonable 2.33 average cost.