Having played a bit I'll tell you some spells I can't work without, granted, I'm by no means a pro, but I can hold my ground: Arcane gate and flash. Sure, some will say they can just shock bomb or whatever, but arcane flash is just awesome for huge sinking damage. Shining bolt. A must have in any book, you don't want to wind up against a lich or a wright without one. Den. I just love it - it deals damage, it heals itself. Fire arrow (with fire bolt) - once you learn to properly use it from any spot (save for trapped), it's amazing. 200 damage right there. Bolt's nice too, but other than for the arrow, unnecessary. Rain of arrows (along with fire rain) - With their accuracy it makes it probably one of the more devastating target spells. I can't count the times it's saved my ass when I use it after gating to a hiding spot when Im down to very little hp. Shock bomb - it's just awesome. Aura of Decay - Yeah, guarantees that one guy who's hiding over there to move away. Fire Shield. Vulcano. and the rest I usually mix around depending on the mood. I'll often have deluge or rain of chaos (once you learn to use it properly, it kicks ass), sometimes changing for mud ball and mass boulder or some other stuff. But the first stuff, well, I always feel awkward without it.