I looked into the Calm Mind thing, the ability description was wrong sorry! the ability is meant to trigger after all pokémon have acted, I felt it helped differentiate it from other similar abilities (ancient power, dragon dance, bulk up). The disavantage from the less useful trigger point is offset with a bigger stat boost
that being said, I'm not sure if it is because of the wrong description, but if the way it works is so unintuitive I'm not opposed to changing it...