Holy macaroni, it is a 21 day maze!
Nanukk, Rexx, Nautilus, Draza(!), and Brynhilda - as well as the new monsters Teskita, Zimnyaya, and Herr Kommisser.
Voytek is being saved as the limited path. You will need 12000 coins to get him in 2 days when he appears.
I am going for Herr-Kommisser first! But another Nanukk is also perfect for ranking up the one I have. I don't think F2P players will get any of the legendaries.