Just got done farming some pops in dyna-windurst, and as thf/nin, as guessed, ninjitsu magic would proc randomly per spell, but I had to cast over 2-10 times. this sample size was maybe 10-15 mobs though, so not very conclusive. I wonder if the % to proc with a spell, is further diminished by casting magic that is /subed. have to check in a bit, going back in in about an hour.
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