The ability "Sucker Punch" (Automatically granted to players with a 1H weapon and empty OH) will have its cooldown reset when the ability is lost and reacquired.
After using Sucker Punch, unequip the mainhand weapon and re-equip to reset the cooldown.
Since unequipping in combat costs 0 AP and re-equipping is 1 AP, this ultimately results in 1 AP to refresh the CD. This technique can easily be used by any Dual-Wielder too. Simply unequip the OH, cast Sucker Punch, then re-equip. 2 AP for a reusable Stun any time.
Oddly enough, this bug doesn't seem to work for any of the similarly granted abilities, either from unique items or the ones granted by other weapon styles. It seems "Sucker Punch" slipped through the cracks.
Abuse of this technique leads to trivial stunlocking of enemies.
I think the ease of offhand weapon users unequipping for 0 to gain "Sucker Punch" anytime should also be considered an issue.
