So far, the biggest difficulty for me is, that you can't assign favourite spells to quick keys (at least, I haven't found such an option). I've been putting myself on fire while healing goblins and killed myself by spontaneous forcefield creation that catapulted me through the air out into the ocean. Fancy robes or not, wizards swims like rocks
Half the fun of the game are miscasts and friendly fire.
You just need another player to appreciate it and res you afterwards.