Goety: Mastery of Magic Addon

Added elemental weaknesses/resistances.

Edit the file mob_weaknesses.json to add/remove them.

By default, undeads will take double damage from fire spells, blaze-like creatures double from ice/water and acquatic creatures will take double damage from lightning. Also, undeads will reduce ice damage.

It's all configurable in mob_weaknesses.json, you can edit both the damage types and which mobs are affected.