Vapour Imp Evolution Quest

tele/portal shipwreck merchant (island of the lost area) enter glimmer

With a water imp in group kill all mephits and a special message will appear and a lever should show on ground. Pull the lever to reveal a down exit from where you first entered glimmer. (hint, you can just type exit and go to the room which doesn't have maze in its name to get to the down, all rooms in maze is connected to this).

Mephits are sanced, but not particularly hard, they can hit a bit.

When you head down you will encounter elementals that are unsanced and weak. As you make your way north watch for the entrance to the throne room name, next room is sorta mean. It has an enormous elemental (keyword: pretender, scan description: massive) and probably a few elementals (they wander though, I think). You definitely want to group to bring down this mob, haven't played much with it but would estimate two biggish casters and the imp tanking as a minimum, more is better.

You want to bring the orb from the pretender back to Vincent and evolve.