Torc of the Brute (3.5e Equipment)
From D&D Wiki
|Aura:||Faint; (DC 17) Transmutation|
Torc of the Brute: This iron rod has a notch in the shape of an ogre's head on either end. When bent around a medium or smaller creature's neck with a DC 20 strength check, it provides a continuous Enlarge Person Spell on that creature. It can be removed from the creature's neck with a DC 20 strength check as well.