WHOA. Ok, thanks for the heads up on this. That is absolutely our error. When we put the items together for the box, we inadvertently grabbed an odd version of the Slaughter weapon. We're working on a fix for the box's contents that will be updated in the next maintenance, and I'm putting together a short-term solution for Warriors over the weekend that will be hitting 65, so they won't miss out on getting the rewards. Warriors hitting level 64 will get their Slaughter weapon at 64, with a note to either wait until after Maintenance to open their reward, or to sell/discard the weapon that is inside the box.

Additionally, for every warrior that hit 65 since Tuesday, we're going to be sending them a proper Filet & Steak Weapon, along with an additional +9 Enchantment Scroll.