I do not have my game yet. But I can see this deck would be working.
And flaws:
- with focus on cursing your oponent, you will not have many options to deal with creature swarm, because you will have many single-target spells.
- disspels and heals etc. could slow your deck very much - even to the point, where it is near to useless.
- your deck is not very fast - and if your oponent has very offensive deck, you could not be able to kill him before he kills you.
My suggestions:
- some area of effect spells could help you with swarm.
- since you will not have many creatures - this obelisk-cojuration giving upkeep +1 to all non-mages would be handy.
- use Decoy - maybe your oponent will waste some dissenchants.
- look at Arcane school - there are some good controll spells (mana drains, counterspells etc.) - when your oponent is rotting, you do not have to do much - just keep him away from doing anything useful.