I don't have much experience with modding, the best I do is occasionally tweaking some numbers in .xml files as I see fit. So the best I can do is open up said .xml files and ctrl-F through them in search of anything that looks like it might be a Krong mechanic, but I haven't found anything. I also searched the threads in here, and the lack of answers I found therein is already giving me an inkling to what the answer might be. So, is it possible to mod anything related to Krong? Is it possible to invoke a Krongian enchantment without an anvil? Is it possible to change the success-rate of an Anvil of Krong (in general or per anvil in specific)? What, if anything, is possible to alter anything involving Krong? I'll take any info I can get. Thanks in advance either way!
I think you might be able to do something resembling Krongian enchantments without an anvil but it would not be very simple and probably not work well. (I can't remember if there's a way to edit an item enchantment without encrusts 'cause I'm out of practice; so you could make a spell that gives you some sort of encrustable token and use the usual instability stuff as part of the chance of curses?) It's not really the same but it resembles it vaguely.
Which entries and how do they work? (A lot of that particular database is pretty ambiguous as to whether raising a number will increase or decrease the odds of its associated effect)