One question I've always had is, can new spells be created in ERA 2? In VCMI it is easy to get it, but I think ERA 2 is also capable of doing it through ERM or plugins, and something that supports my idea is that I think I remember in hmm35wog.pac, the text "sptraits.txt" has empty slots named "Wog Spell", with the help of ERM, a .pac that adds and replaces the graphics in the spellbook gives me hope that new spells can be created.