Hard to explain this one in a title. I created a new character to try some mage skills (didn't go well!), and on the second attempt I used Dragon's Breath from Promethean Magic as my 'secondary' attack. I died and loaded my current game with a melee character, and I used my secondary attack without selecting a new one... and I cast Dragon's Breath.
This bug is so ancient that I had to look if it was on our most recent tracker. It wasn't. Now it is, thanks!
This sounds like a great way to cheat your way through level 1-2 as a wizard. If you know you're going to die, put some killer skill like Rift or Obvious Fireball or -- best of all -- Release the Diggles! -- in your skillbar and then don't pick a new skill (or use any items, I guess) until you gain a level or two. ... Nah, too much work.
Oooohh..starting level one with Wallenstein's Inevitable Victory stance...that would be awesome. Or Plutonic Fist. That would be sweet, too.
I know it is bad, but I would use the Glyph of Imhotep on my Bankster character so that I didn't have to run the entire Egyptian Magics on a character that I didn't want to be a mage at all.