Delerium Blade debuff, any info?

[Marxam]

I was wondering the same on reprisal, also thinking about the practical applications of it, you can't rely on a parry pre-tank buster so do you just use it whenever you can and hope it's up when the big hit comes?

yeah seems too unreliable and I feel like it won't stack with storms path, which can be applied consistently before big hits.