I need 2x Resplendent Spark to create one helpet I want, I will destroy one helmet I alreayd got to get one spark, missing one spark.
Google said I can get it from destroing any mythic

THX!

You need to get mythic as a drop to get a spark, those are untradeable

cant trade those, just run mythic undercity and you will get 2 in a run

Mythics are not tradeable.
In order to trade for one to destroy you'd have to craft it first which would require 2 sparks initially.
If you need a mythic without first having sparks then you need to first either complete seasonal quests for sparks or find a mythic in the wild, ideally from helltide chests or boss lairs.

I think best key I have is MAGIC not possible in near future but thank you for info

I did Echo with lilith but dunno why spark went to my paladin in Eternity, instead season character

There are a few quests wich will give you a spark, if you want i can help you in a hour to get 1
pm your btag if you want