Emoshin
So Long, and Thanks for All the Fish
It's my go-to in-fiction explanation for how PCs go up in levels or when they cross over to new editions. They have a mid-life crisis, they eat, they pray, they love, and when they come back, they are somehow changedWait .... that's a euphemism, isn't it!
That's our druid, always going on journeys of self-exploration, polishing the ol' shillelagh, gettin' wild shape happy again.
(Ok not really, but it could be!)