Looks good although i think that 4 edicts is overkill...unless you are absolutely swamped with aggro in which case you could even consider some form of mass removal? or is it simply too expensive?
Also masticore in the sideboard is a must since it destroys goblins/sligh and generally any weenie aggro deck. Spinning darkness is a good sideboard choice vs aggro.

Personally i also play sinkhole and hymn to tourach and they work for me.