Mischievous Summoning Stone

Mischievous Summoning Stone is an item from the Wintersday 2008 special event.

Description
Double-click to summon a Grentch ally of your level that lasts for 30 minutes or until slain in combat. Summoning stones can only be activated once every 60 minutes per character, and only one summoned ally from a summoning stone can be present in an instance at a time. This item can only be used in explorable areas.