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
https://imageshack.com/i/n1nm7bj
https://imageshack.com/i/0kxu3kj
https://imageshack.com/i/m91tifj
https://imageshack.com/i/055aptj
https://imageshack.com/i/15cq0fj
To install unpack rar and drag Edited Heroes folder to Mods.
Edited Heroes.rar (1.28 KB)