Enhancing weapons with natural abilities

[kirbwarrior]

A race I've made in another system, called the D'Voir, has the ability to cover their weapon in fire, ice, or lightning. It's a small bonus, but enough to make a difference. For simplicity, lets go with fire, and i can figure out the others from that.

Any weapon that has reach (aka more than c) will do +2 burning damage when used by a D'Voir. At first I'd thought it'd be simple, but nothing quite works right. I don't know if this should be applicable to ranged weapons...

Innate attack with link plainly causes just 2 more damage, but armor counts against it also, when it should only apply once to the whole damage.

With follow-up it would do the same if the weapon didn't get through armor, which would most likely stop the fire also.

Follow-Up and Contact Agent would give it a quasi-magical feel, but would it work to light a dead log on fire?

Also, can link and follow-up even be applied in this manner? How, and what else can, if so?