So I'm working on my first mod for the game and I ran into a bit of an issue while working through some new skill trees.

I have a handful of skills that I want to tie into existing effects in Dredmor, much like how Bankster checks for Egyptian Magic glyphs when seeing if it should proc Pyramid Scheme.

Is there any way for me to edit an existing effect in the game without having to edit the core spells XML file? I'm trying to avoid that as it may horrendously break compatability with other mods, won't survive steam validation, and have other, unforseen consequences.