Automaton Summoning Stone

Description
Double-click to summon a Golem 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.

Acquisition
The Automaton Summoning Stone is a quest reward from the quest Zinn's Task.

The Golem
The summoned Golem is the same level as your character and uses the following skills:

Trivia
The skill effect you gain when using the item, Summoning Sickness, is a reference to Magic: The Gathering. In Magic, a newly-summoned creature card suffers from "summoning sickness" for the first turn, preventing it from attacking.