The following creatures you can spin during this event:
Chocolate Moose - water/earth - 14/14 (SR)
Lemercury - cosmic/earth - 8/14 (R)
Sea Horse - water/nature - 13/14 (SR)
Sapybara - earth/nature - 13/12 (SR)
I just spin Chocalate Moose. The rest of them I already have. More luck during spinning a creature than breeding.