Then that made me wonder: how would you feel about a one-shot wonder dagger (Legendary/Extraordinary) like this:
AP: 4 AC: 15, AD: 10, Critical Chance: 50, Critical Multiplier 4.
On Hit: On Source: 95% chance Minor Weapon Feebleness x15, 4 rounds
Flavor text: It breaks and reforms, breaks and reforms. Shockingly smooth and sharp as death, you'll only get one strike, so make it count.
For the boss drop, I was thinking something nice, but not unbalancing. Maybe something that would work with the dagger:
BC: 5, Critical Chance: 5, AC: 5
Flavor text: Shockingly hard and durable, this helmet does not restrict the wearer's sight like most do.
Just because the woodcutter's hat is the only hat that has critical chance on it. This would give people the option to have something else (better), but wouldn't be broken, just a little bit better, and something you have to fight hard to get. No one who isn't doing a critical build is gong to bother with it though.