Make it so that if you cast it at a weapon that is not magical (just a plain weapon) that it coats it in a very dangerous magical aura that harnesses the full power of Weapon Fire for a while. So using it successfully would be a guaranteed flare with weapon fire crits. I like this because when feras was changed it sucked something out of the life of the game that was needed, imo. Feras would rip crits into the foe with a nasty level of damage which would decrease slowly until the weapon would expire. If we cannot get that back then this is about the next best thing. If we didn't use the WF crits and had new ones, then it could be exactly like old feras and then the weapon could become crumbly. You might even have the weapon itself
become charged in a way that the metal would break apart from the elemental energy, eventually.

Dragons r Real