Well of Souls - Puzzle(ish) Room WIP

It does seem like trial and error is the only way to get anywhere, apart from the potential to find someone's map or the divining rod. If you're looking for something for the players to solve, maybe some kind of pattern, like they know that each pedestal position is only used once (as in white laser) so if they take the far right pedestal and get white they know far right is never the choice again and if they get a blue, at least they reach the next level and know that position might be used again.

The fact that they have no way of knowing if the platform it teleported them to is the right one is fine, since they will have three blue pedestals anyway. Depending on how dangerous the Soul Guardian is, there's a decent chance of just jumping all the way up with just blue pedestals if they give up on the puzzle.

Stopping a bypass of the puzzle with anti-magic, teleport stopping fields between layers seems reasonable. How would they get down from platforms? Once they try and get a blue or red, if they want to hurry out of the room, being up on a platform could be worse than being shocked on the ground. Maybe the room has innate feather fall or something.

If you're going to expect them to return over and over, they're going to need some sense of reward for reaching any given level. Depending on the players, access to more of the nearby areas could be reward enough, but maybe also something more tangible, like magic items, money, or advancement.

It's got the makings of something, but to feel good as a central puzzle, I think the flavor is going to be a big deal.

Sounds like a plan, let us know how it goes. I'd love to try a recurring puzzle room myself, not sure where in my world yet, but whichever of us does it first can come back with experience to share.