[Chaos]

This already exists, it's called Judgment Blade.

The closest thing we have to Dimensional Shock is Akashic, but I don't see any class, let alone an Evoker or either Summoner Promo, being worthy of a spell that can dish out the one damage type that has no specific resistance against it.

I mean, I think there's a good reason why only a very specific 10* effect and a Lich's racial Trait Skill have access to it.