I just KO Atlantis Dragon level 16 first try with one bash with Nightmare Dragon level 10 not bad for a 35% chance of winning.
Just for the record:
R21 (dark angel) Beaten with Gemstone L10 BM++ (first time)
Stuck on R22
Origami Lost to Leopard BMB....next try with Ninja right after spa...than probably pink colors dragons or Illusion recommend by Sumercarefree.
What must I do... I cannot defeat angel.. I tried Valkyrie, diamond twice. Infinity. Rainbow! What? Should I use ultimate? Do not want to use that.
Mirage went down to trickster10 BB YES 1 round closer