|An exotic sword, enchanted to provide both mental and physical strength to the wielder.|
+8 katana (+13 damage, +3 accuracy, 120% speed)
The autumn katana is a very nice weapon if you can find it. It has excellent speed, good damage output, a low skill requirement (it hits min delay at 12 Long Blades), and is one of the few sources of clarity in the game. It's a good general purpose one-handed weapon, and if you're playing a mummy or have issues with magic resistance, this weapon is perfectly suited for taking out opponents capable of confusing you.
The autumn katana was added in 0.10.