effect that adds fire damage to weapon attacks

[Belegantee]

How do I create an effect that causes weapon attacks to deal an additional amount of fire damage? Even on attacks that deal physical damage?

[FoxLee]

Unfortunately, you can't currently use an effect to add a damage instance—only to increase existing damage values. I believe you could do it with a macro (you would probably also want a module like Effect Macro, to connect it to an effect) but with just effects as they are in the system, it's not possible at the moment.