Smite has no damage type of its own, it adds damage to some other attack, which does have a type.If you attack with a longsword it is slashing.
If you attack with a Flaming longsword the damage is still slashing, but there is an extra d6 of fire.
If you attack with the Flame Blade spell then the damage is fire.
That's what I was thinking, I just wasn't sure if there was a specific ruling beyond the fact that it's added to a specific damage roll rather than added as a discrete bonus to overall damage.
Glad to know I'm looking at it the right way, then.
Ok. So you're thinking perhaps like the flame strike spell in a way? Half acid half divine and (like smite) unable to be resisted?
Do you feel then that would add too many kind of damage now that some is resistance? For instance I attack with a long sword and strength 18. 1d8+4 then the "oni Smite?" Or is it all Smite?
It would be best to figure the answers to that first and work backwards once you know once and for all.
Not trying to be douche, but I'm honestly not sure what you're trying to say here. The Monk of the Four Winds doesn't get a smite attack for selecting the oni spirit, I was trying to figure out of a smite attack used against them would negate the regeneration they'll get - assuming I made it overcome by good - the same way hitting a troll with a lit torch negates its regeneration.
I think maybe we're getting our signals crossed here, or coming at this question from completely different directions?