Enchanted stones

Enchanted stones are obtained in The Myths of the White Lands quest, and it turns out to be Yeti Dung, but further on in the quest three imps enchant it and the Yeti Dung becomes the Enchanted Stones. To obtain more, go through the Yeti Lair (Talk to a Head Snow Imp whilst in the Christmas Event) which can be acessed by talking to a wizard in the Wizards Tower.