With Forbidden & Arcanus, the Eternal Stella can be applied to the XP Tome. This repairs it automatically, allowing for unlimited XP gain.

I would say that this is a bug with Forbidden & Arcanus, because they should check whether an item is repairable or not - and the XP Tome isn't.

However I'm working on a rewrite of XP Tome, that will allow for configuration options, and will automatically fix this issue, because XP storage will no longer be based on damage values.

Closed by 14c8c87.