used the auto build on the character builder and got these suggestions:
At-will Powers: chaos bolt [phb 2], Acid orb [phb 2], lightning strike [ap]
Encounter: mists of disarray [lvl 1 ap], essence prism [lvl 3 ap], chaos storm [lvl 7 phb 2]
Daily: blinding bolt [lvl 1 ap], serpentine blast...