In the 5e DMG travel to the Feywild is accompanied by a time warping effect, which is determined by rolling on a random table.
My wizard (semi-inspired by an ancient ball of fun from Critical Role) is looking at making a planar home for himself to take advantage of this kind of effect.
I haven't found anything in 5e, so suspect I will be looking for rules from earlier editions: what planes have stable (ie: not rolled on a random table) time warping effects?
Specifically I am looking for a plane on which I can spend a long time, then step back into the material plane where a shorter time will have passed, even more specifically I am looking for one without negative side effects! Yes this is a classic 'how can my wizard extend their life' question.
So far everything I have found either has a side effect, is randomly rolled, or is the far realm (according to the 3.5 manual of the planes, and even that isn't clear about no negative effects upon returning, but might have to do for my purposes).