Day 2 (didn't test much, was mainly a run for the mega-boss with a little farming after)
bst/nin, Easy Prey Hippogryph/Manticore in Dynamis Valkurm
Waning Crescent 38%

118 casts
midnight - Hippogryph - 6 triggers
daytime - Manticore - 6 triggers

Trigger rate: 10.2%



Day 3 (also didn't test much, was just killing orcs for AF, and not many caster types)
bst/nin, Easy Prey Orc in Dynamis Buburimu
Waxing Crescent 29% - 33%

100 ninjutsu casts
6 triggers

Trigger rate 6%