Belt of Athach

This belt gives its wearer an incredible physical prowess, granting +4 enhancement bonus to Strength, Dexterity and Constitution, and the ability to increase their size as per legendary proportions spell for 13 rounds once per day.

Wearing this belt feels weird — it makes one feel like they have way too many muscles under their skin, and gives them annoying phantom pains where the third arm is supposed to be.