Tovlyn
Skeletron Prime
Yep, if anything, we need to remove the potential for this happening as-is. Having any form of indestructible material at all can still result in some awkward situations with people cheating them into their or others' worlds. I think that I need to come up with a summoning-item for Necronomitron, since this would solve the problem with summoning him when the room is broken.Yeah, they ruin everyone's plans.
I actually consider making it an RNG-drop from the good ol' Palladin. Though this would seems counterproductive, in the end it will prove an even more solid reason than indestructible walls for the player not to break the Inner Chamber. -If you end up having to rely on this semi-rare drop, then you brought it upon yourself willingly.
As a small status-update on my threads; this thread will most likely be my next focus for completion, since it's currently kind of out-dated and has been left untouched for far too long. I may or may not have come up with a drop for the boss as well, so that could be a thing.