@Stormanimagus. So...why no Moms?
Mother of runes just doesn't fit this deck's game plan. Its filled with creatures that simultaneously fill the role of agro-stick and light lock piece. Mom can either attack or protect but not both. If you are bringing her in for protection she's not doing damage. As storm said, you want to do roughly 15 points of damage in the first 5 turns. She doesn't contribute to this game plan.