i hope that's something they put out in future expansions. adding elemental damage to melee/ranged attacks is a big part of fantasy-themed magic. as an enchantment or incantation, it can really add some twists, especially if the effect roll can be added to an attack that already has elemental damage. So, for instance, a lash of hellfire could have a rot roll added to its fire attack. To balance it the rolls could be more difficult than normal (ex: 10+ for the 2nd effect)