you need to pick an archetype and stick to it. then cut the rest for control spells. you have 4 removal spells and 6 permissions. you also have no acceleration to support a deck with 3 8 drops and a bunch of other huge bombs.
I would agree with gawec. You need to choose either mill or late game damage. If you're doing damage, drop some spells like Utvara Hellkite and put in AEtherling . If you're doing mill get Ashiok, Nightmare Weaver and Jace, Memory Adept . Then back them up with support spells.