Currently I'm lacking 2* evo runes and they are really difficult to farm. You need to go down to levels that don't drop anything else, and even then you are required to spend hundreds of sot for very few 2*. 3* on the other hand drop at a decent rate. I was therefore wondering if we could downgrade our 3* to 2*, even 1 for 1 would be fine. To evolve another cosmic i need 50 !! 2* evo runes. I haven't gotten that many in the past 2 weeks ...