And just to prove the game just throws spit balls when it thinks the umpire isn't looking...
I was re-rerunning Diablita to make her a two-hander earlier than her first game, and she'd just reached level 30 when she gets an Ancient Dragon swooping down on her! They're not supposed to turn up for another 15 levels! After she died in one blast of frost breath, I turned the difficulty down to Novice (first time ever!) and she still got one-shot killed by his bite.
Eventually, after a couple more restarts, she managed to bring him down at a distance with Dragonrend and spam firebolts at him before he got close enough to bite her again. If she hadn't given her trusty companion all the staves she'd taken from Dragon Priests, he might still have won.
![ohmy.gif](style_emoticons/sinders/ohmy.gif)