Cosmic Serums are energy packs released in the Universe by Sharat Sir. Sharat Sir programs them for use with VK when he launches them in the Universe.
So any VK users can use the new Cosmic serums ….. the same way as we use older Serum. No special attunement or formality.
All serums are now explained in details on Litairian.com.
You can now check how to use each Cosmic Serum creatively, check the hyperlink…