Just the most OP ones. You know, Vector Control, Time Control, Spatial Distortions, Creation of things out of nothing, Control of the four elements, etc, etc... If you think it is OP, then it most probably is. If you wanna check a power, shoot me a PM or post it here. 

Oh, also, as stated before, you at first have no control over your powers, since they just arrived in short notice. ;P