Do cust effects for Weapons stack?

[The Angel of Ruin]

I've been replaying vol1(I'm too lazy to go get everything I have left to get in Vol2 right now) and have been playing a little differently(I've never used element effects for weapons before now). So I've been wondering, If I equipped a 2 olm shell(or other weapon effect items) to a weapon, would the effect stack? Also, something similar, if I equipped something like an Olm Shell and a Wing of Lufu. would I have both elements or just the first(stupid question, but can't hurt to know for sure)?

[Zohar]

I've been replaying vol1(I'm too lazy to go get everything I have left to get in Vol2 right now) and have been playing a little differently(I've never used element effects for weapons before now). So I've been wondering, If I equipped a 2 olm shell(or other weapon effect items) to a weapon, would the effect stack? Also, something similar, if I equipped something like an Olm Shell and a Wing of Lufu. would I have both elements or just the first(stupid question, but can't hurt to know for sure)?

Well, I know for sure that it adds to your elemental stats when you equip one or more of them (i.e. Wing of Lufu + Olm Shell = +3 Wind and +3 Water) but I think I'm gonna go test out if it adds the extra attack in, too... I'll let you know what I find out, if no one else does.

[monkeyseeall]

yes if you have 2 different custom items on a weapon it will do both elemental attack effects with a given chance
they can even happen at the same time which can look really cool some times