Grimrock

I'm working on a (as) total conversion (as possible) mod for Black Crypt within LoG2, and I've got some humps to mull over.
1. Does the editor allow for changes to spells/ways to make new spells? Specific example: I'm looking to make certain squares "magic fields", where a party could walk through, but would take mild damage, unless they cast "dispel magic" at the square first. This also means I need a way to make that field square too though.
2. Is there a way to make a monster unkillable without wielding a specific weapon?
I have a lot of work ahead of me, I still need to learn most everything, including how to replace assets like monsters, items and walls, but that all seems doable with time.

Awesome, thanks. I've barely scratched the surface of the editor, so I'm sure after looking at a BUNCH of tutorials I'll be back with more questions. I haven't coded a thing since HTML 4, so this is gonna be a long project/learning experience for me.

But there aren't a bunch of tutorials yet! Learning Lua in general will help though, there are tutorials for that.