Looking at the combat log I noticed that that weapon is so scary that I can lose up to 80% of my weapon damage, 16 concentration and 40% attack speed.

I've not yet figured out what the save on it is. Will maybe? Anyone know?

Also, has anyone figured out the damage type or if somehow that attack bypasses dodge? I was rolling in on them with 21% base dodge, 50% uncanny and adding the 30% from tempest and still getting hit way more often than I saw "dodge" over my head.