Caitsith.Jessie said:
I use it when soloing, especially when going /NIN. On Decent Challenge mobs, I noticed a massive drop in the monster's attack speed. Apparently Slow II can't overwrite it which makes me think that it's at least almost on-par with Red Mage's Slow II spell.
And really, like I said, I noticed a pretty huge effect, even without setting myself up with a ton of MND, or anything else that might boost its effect.
Couple this with Actinic Burst (which you likely have on 100% of the time for Auto-Refresh anyway) and laugh as your Utsusemi:Ni lasts its full recast.
Filamented Hold is more potent; Cimicine is only 15% slow. That's a far cry from Slow II with any half-decent MND build.
Also, MND doesn't affect CD's potency.