Changelings should not be able to use the shield of souls

[Unknownity]

An easier fix would just be removing whatever exploit people are using to solo the lava moon this time, because it's mostly lone powergamers sneaking off to grab it. SoS abuse goes way down if an aspiring immortal actually has to involve other people.

This doesnt help anything about the changeling using it.
Lings can solo it too without the ""exploit"" (its intended to work which I wont spoil),all they need is someone they ate (and them having atleast some knowledge of lava for things to go smoothly) and make them a handspider (handspiders can interact with buttons),it's not true solo but it's more easier and faster than every single method that ever existed before of doing the puzzles.
The only drawbacks the ling gets when taking SoS is it starting all over again from 0 DNA points and everyone else being kicked out of the hivemind.

the correct thing to do would be removing away interactions on the adventure zone exlusive buttons from the handspider if you wish for the ling to not be able to atleast solo it.
If you want to nerf SoS,you could make certain special deaths permament you can aim for.
(There is however one way to cheese against a SoS user,place the obsidian crown on it and watch him get consumed once he goes low enough,I tested this before and it worked however I was also wearing the armour which could have negated the SoS too.)