Need an event which awards 2 star colorless evo runes

[Yup]

I have tens of dozens of talismans that I can not evolve because 2 star colorless evo runes are few and far between.

Yes I grind BNW or Night City.. yes they will drop from some frontier dungeons.. but when you look at the breadth of talismans that require them, especially cosmics that require 50 EACH, there simply aren't enough dropping anywhere.

I have close to 7K 3 star colorless evo runes and close to 400 1 star colorless evo runes.. yet getting 50 2 star colorless runes is a once a week thing. Which means, evolve 1 cosmic per week and forget about non-cosmics. It's a bottleneck.

The same could be posted for 1 and 2 star colored evo runes as well.

Frontier dungeons need a boost where these items are concerned.