[JamOfBoy]

While you have a Weapon Charge(s), and this is your main hand weapon: Gain immunity to knockback and pull effects.

This line on the Labrys is mythical. Mythical because it does not seem to function.

Labrys in main hand, excel charges, still get knocked back. Weep and cry.
Tested with an Arcane Labrys with potential unlocked. Tested by gaining excel charges both from external sources and Retaliating Charge. Will test different circumstances on request.