I've recently re-spec'd my character using Waking Dreams and have turned him from a sword and board / crossbow / sun damage wielding mage to a 90% mage with one-handed. I did this because I find mage gameplay much more challenging at high levels (67) than warrior gameplay.
Anyway, since doing this I've developed a couple of offensive moves. My go to move at the minute is paralysis / mass paralysis (with Become Ethereal) + wall of flames + aversion to fire poison on my sword. Everything goes down very easily with that combo, even on legendary difficulty.
Soon, once I have levelled up my illusion enough I plan to use invisibility + silent roll + mayhem to get right into the centre of a pack of enemies and cause havoc. Wall of flames will probably be used at this point too for the extra chaos factor. Or perhaps after doing that I could also use Become Ethereal + blizzard / fire storm.
Anyone have any interesting or unusual moves they use regularly?