how about Mana Reflection . that and Ancient Tomb is great. it'll make it tap for 4 and still only take 2 damage :D

Ark of Blight - b/c its funny

Armillary Sphere - ultra ramp

Astrolabe - mana accel and card draw

Golgari Cluestone would work well now

Dreamstone Hedron - three mana for three cards at least once a turn? yes

Oh shit, Ark of Blight that.... that right there is a beautiful suggestion. I also do like Armillary Sphere . The rest feel too slow. The deck is just pure combo now lol. That's how my decks always end up. Either combo or hardcore control.

Mana Reflection costs a lot of mana, I'll think about it, but damn. What I think I want to try, which would end up being cheaper, is Pattern of Rebirth to go get either Vorinclex, Voice of Hunger or Crypt Ghast .