If you have a Ninja tanlk please roll this dice to help him get his shadows back up and running, belive me I hate when im trying to get my shadows up and I keep getting interrupted >.<
I don't know. It would be interesting to see which would help a ninja out more in that situation... higher evasion from the ninja roll or less interuption from the bard roll. Of course, the ninja will always be there to up the power of his roll. And if a bard *is* in the party then the mob will almost always be double slowed which makes it pretty easy to recast shadows.
Bard gets their first elegy spell at level 39, and by that time, Ninjas already have Ni and aren't quite as worried about recasting ichi...though it does still come into play a bit before Haste levels. You're forgetting that this roll is way before these levels, so there is a potential for it being somewhat useful. However, without a bard in the party, this roll is going to have such little effect on interruption rate that there's probably no reason to even use it. Also, white mages and red mages cast Slow at these levels anyway, so in the end, when leveling my corsair, I will be far more likely to give Ninja Roll than this whether there is a bard or not. Ninjas are better off investing in a Nikkariaoe once level 30. I loved that thing when playing Amai's ninja ^^