With this mod you can change Hero Properties without edit original config from VCMI. I edited Xeron - Inferno Campaign Hero, he can now upgrade 1-6 level Inferno Creatures to Devils and Devils to Archdevils. His Secondary Skills changed from Leadership and Tactics to Offense and Logicstics
To install unpack rar and drag Edited Heroes folder to Mods.
Edited Heroes.rar (1.28 KB)