Hi,
Quick question here : I'm considering using primal magic during one of my quests. Do you think it is a good idea to give out XP for dispelling/surviving such events (just as traps)?
Other question : When a Primalist wizard triggers a primal event, does it affect him or does the event occur where the spell (which triggered the event) was targetting?
Quick answer: It's got a CR, so yes.
Other answer: It doesn't explicitly say. though I believe the intent is that the primal magic effect is centered on the Primalist otherwise it wouldn't be much of a drawback.