Every 16th turn on your team, the Boss will wipe away all the beneficial buffs on your team and attempt to stun everyone. Understanding how this affects your team is huge, because in reality, your important monsters only get about 2 turns to do their job each cycle.
Do you believe me? Your 16 turns becomes 13 turns on average when you factor in an average of 3 stunned each cycle. With 6 monsters on your team, you are most certainly going to get one violent proc.
Divide the remaining 12 turns by the 6 monsters on your team and you have an average of 2 turns per monsters per cycle. The bottom line here is that each monster on your team has a very small window to do their job, and understanding the Cycle allows you to tweak your team to beat it.