|Aubrey the Malformed|
Don't worry, it is a mistake that is quite natural. Looking back, I suspect I hadn't decided at the time that Oula wasn't the poisondusk back at the prospectors camp. But as the game developed it didn't make sense for that poisondusk to be the one at Pooma's village and the one who you ended up fighting with, since his power level, scaling against yours, wouldn't really be appropriate for also being capable of calling up some massive legendary beast from its slumbers. So don't worry about it, you won't learn much from looking back. That's the joy of a developing storyline, continuity problems and all.