Bunna ⚪ - a fusion of Golden Bunny and Silver Lupa. Her outfit is based on Gogeta from Dragon Ball Z.
Trivia: she was the 1st mythic girl, and it's her 3rd revival.
They confirmed in a Q&A at Discord last year that they use a weighted System. We don't know how they weight different rewards so it's hard to expect how the SM keyes (or other rewards) will interfere with the dorpchance of the Mythic Shards and the collectable data for this is a little bit to small for a good assumption.