Talk:Hidden Powers!/@comment-24653364-20140519125542/@comment-24850617-20140520105151

Saving is probably the right idea. We have no idea how common it will be, but knowing COLOPL, it's probably going to be very rare.

My intuition is that 90% of the time, we are expected to unlock hippos with duplicate cards, and the bottles are rare treats, like crystals.

And like Zayler said, probably best used on those spirits that are already S rank and maxed.