You are going to have to ask someone about crippling blows on live after the Velious 2hander patch who played a warrior.
I know they exist but I don't recall anything too huge or crazy.
Maybe Kringe will tell you if you're nice to him.
This damage appears to be with primal proc'd and high end velious 1handers (not sure which) so the damage might be possible for the big 2hs..
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