User blog comment:Kevsuc/Wrath of The Dragon Official Trailer! Plus, Get 100 Crystal + 5 Tickets for FREE/@comment-73.141.96.166-20160615154705/@comment-33658145-20160616013644

Unfortunately, that might happen. But don't worry... Use Adventurer Cookie instead because he will have a permanent Hidden Coin Ruins underneath. If you still want to play with Mint Choco Cookie, that's fine with me, but you won't earn as many Coins as Adventurer Cookie.

Fast Energy Drain will happen. I'm sorry, but to have the fullest Coin Farming experience, use Slower Energy Drain or Increased Base Speed + Coin Bonus (and Magnetic Aura).

Mystery Boxes will not come rarely. Although getting three (or probably two) Mystery Boxes in Ep.1 require an endurance run, I suggest running in other episodes or having the L-grade Power+ with you. Of course, getting Rainbow Mystery Boxes is harder...