Looking for Permanent Necro Call mod

[BB Shockwave]

Find a good solution... in fact one that keeps the old Necro Call spell too.

I simply edited the (totally useless and never used by enemy heroes either) spell "Last Hero" to be the "Animate Dead" spell, modifyed it to be a Chaos spell, and (since Necro Call works on all levels of creatures, plus the Bone dragon is so fragile) it works on Level 5 undead too. So now, there are two spells with the same Necro Call icon in my spellbook, but it's easy to tell them apart as the edited version still has the Last Hero description. That way you can resurrect your own undead units, and you (and Necromancers) can resurrect the enemy's fallen units to serve you.