Proxina Blocking the unblockable

Voltaire

Proxima Midnight is blocking Corvus Glaive UNBLOCKABLE SP2.
I know she reduces 200% of offensive when holding block, but doesnt make any sense she block the FULLY UNBLOCKABLE attack... i cant post the video here but i posted the print of the she holding block against the sp2
Or u guys can check it fighting against a proxima with a corvus, at the profile Fred63122.

Eb0ny-O-M4w

Well, you said it yourself.
She reduces offensive ability accuracy by blocking. His unblockable is an offensive ability.