I was looking through some logs to improve and I stumbled upon a group that had piercing and slashing debuffs already on the boss at 0:00 of a fight, providing a slight boost to their opener damage.
https://www.fflogs.com/reports/YqBHrLtxRcQA4DM2#fight=9&type=damage-done&view=events
Looking through some other logs it appears it isn’t a common thing so I wanted to check the validity of these logs.