Damage conversion, pls explain!

[Piss-Warm Chango]

So I've got a legendary ring whitch convert 100% of lightning damage to cold damage. At first I was happy, cause I have fully frost build with a lot of +frost damage modifiers ect... But then i realize that I couldn't find a way to use it. Like what it can do with my build to get...at least something? Even if I change all my skills to the lightning, and it will be converted to frost, whats the difference? I still dont get more damage overall. I am new to POE so i'am sorry if the question is stupid or smth. But can you give me an advice on how to use this mechanic? Why, in what cases I want to convert all my light gamage to frost? phys to frost is somehow more understandable, but why to convert one elemental type to another on 100%? Like u dont even get Trinity effect or some bonuses from different types of elemental damage u apply. Thank you!

[Gnasty Gnorc]

I think it's a defensive modifier.

Any lightning damage you take gets converted to cold damage instead, and you'll take cold damage.

It wouldn't make sense for it to be offensive, at all.

[<#C77>ex_IllusionisT]

It could be useful for classes that have Lightning nodes nearby, but not cold nodes, and they want to play with cold damage type.

Take Merc for example.
Going down, you have an entire path that takes you to lightning nodes, on the right also lightning nodes. But no cold nodes. If that Merc chooses to play with a quarterstaff, there are good cold abilities. So you'd scale your damage using the lightning nodes.

I also think that shock gets converted to freeze. But it needs testing, it's kind of unclear.

Also, maybe there is a really cool weapon full of lightning damage, and you want its mods, but you also want to play cold damage. Having that ring will make that weapon really useful.

[k1n]

Get a +all spell skills weapon/offhand, then use lightning abilities you wish you could (your lightning spells get the +skill, but benefit from your cold damage, freeze build up, I.e you could spam spark on the whole screen to do freeze build up)

[Redman]

To help you understand, Lightning Ranger has really good AOE since the damage chains from lightning. With that ring (call of the brotherhood) it turns all lightning damage to cold. Now instead of applying shock and electrocute, you apply slow and freeze. The benefit is now it also acts like lightning so it still chains and it still uses the speed of the attack from the lightning arrow skill and the buffs from the lightning rod skill. It's a really good ring. So good its going for 10-15 exaults LOL