Interesting. based on what you and T.I.M said, it kinda seems like they increased the drop rate for this wheel with Hidan compared to other ones of this type in the past with other rare ninja. Just speaking for my server, already 2 people (that I know of, there may be more) have gotten him, and one of them got him with like less than 50 spins. Normally in my server only the biggest whales (like 1 or 2 people) end up getting the ninja in that wheel and it usually takes longer into the cycle.