Learned from Ning in aby Grauberg last night.
It does work with diffusion. It does not work like stone skin or a tonic. Seems to only work on a single physcial hit. A single attack landing from any enemy would remove the effect. I guess the point would be to protect agains a NM physical weapon skill. --Erdrickgp 19:09, December 21, 2011 (UTC)
Does anyone remember when a wiki article here was accurate and not written with opinion and falsehoods? First of all, this is for all intensive purposes, a single Utsusemi Shadow that stacks with other shadows, but only blocks a physical hit. Comparing it in anyway to Invincible is like comparing dodging an attack to a thief's Perfect Dodge. I can't imagine that it was made easier to learn from one particular NM vs the mobs from Nyzul either. The page has been updated to show this. Storme 11:21, January 29, 2012 (UTC)