Board Thread:Questions and Answers/@comment-24956068-20150418152938/@comment-26044650-20150418155116

I evolved for the same reasons as Tricoro. It allowed me to run further on my auto run attempts.

Although I did push it to +9 for a couple of reasons: For upcoming Cookie releases that requires you to fully upgrade treasures, and it also allows you to run slightly further since it provides more Energy per revive (even if there is a chance of losing it all within seconds anyway).