Amazing deck and primer. I play a similar list. Have you considered Gate to the afterlife? It gives life and free looting is just awesome. Also I know you said your group doesn't like infinite combos but Nether traitor is great as extra fodder that's pretty hard to get rid of and comboes with Phyrexian altar and Genesis chamber or an on death token generator for infinite mana and death triggers. Also I really like triskelion on this deck have you ever tried it?

Thanks for your suggestions patrikl. I considered Gate to the Afterlife when it was printed but never tried it; I'll give it a second look. Triskelion and Pentavus were in the original deck list and eventually removed for less expensive creatures. I still try to avoid infinite combos, and Nether Traitor adds very little to the deck on its own.