Delayed Extinction Aspect:
“Mighty Throw and Steel Grasp now gain multiplicative damage instead of cooldown from Cooldown Reduction and their damage is increased by another [125 - 250]%”
Third Blade:
“Your Weapon Mastery Skills are now also Core Skills that have no Cooldowns but cost Fury, dealing 50 - 70% of normal damage. Their Fury costs are reduced by 5 for any additional Charges the Skill would have had.”
There likely are issues occuring with this combination that wont be easy to solve for. No information to add as of yet, but I definitely believe OP reading the two next to one another.