Summoning stone

A summoning stone is a special kind of consumable item that allows you to summon an ally to fight with you.

Usage
To use a summoning stone, simply double-click the item in your inventory. After using a summoning stone, your character will be affected with Summoning Sickness for 60 minutes or until you zone, preventing you from using another stone during that time.

Summoning stones can only be used in explorable areas, cooperative missions, and challenge missions. They cannot be used in solo missions or in PvP.

The summoned ally:


 * Has the same level as the character who summoned it.
 * Has a lifespan of 30 minutes.
 * Does not leave a corpse when it dies.
 * Does not travel with the party when you zone.
 * Disappears if the character who summoned it leaves the party.
 * Only one summoned ally can be present at a time.

The Igneous Summoning Stone is an exception in that it has unlimited uses, the summoned ally has a lifespan of 60 minutes, and it cannot be used by level 20 characters.

Core

 * Automaton Summoning Stone - summons a Golem; quest reward for Zinn's Task.
 * Igneous Summoning Stone - summons a Fire Imp; bonus item for specific Guild Wars purchases.
 * Ghastly Summoning Stone - summons a Dream Rider; available from the Underworld Chest.
 * Mercantile Summoning Stone - summons a Merchant; available from Gift of the Traveler.
 * Mysterious Summoning Stone - summons a random ally; available from Gift of the Traveler.
 * Zaishen Summoning Stone - summons a random ally; available from Pokhe in the Great Temple of Balthazar.

Factions

 * Amber Summoning Stone - summons a Juggernaut; crafted in Urgoz's Warren outpost.
 * Demonic Summoning Stone - summons a Oni; drops from the end chest of the elite mission The Deep.
 * Jadeite Summoning Stone - summons a Siege Turtle; crafted in The Deep outpost.
 * Mystical Summoning Stone - summons a Gaki; drop from the end chest of the elite mission Urgoz's Warren.

Eye of the North

 * Arctic Summoning Stone - summons a Kveldulf; crafted in Gunnar's Hold.
 * Chitinous Summoning Stone - summons a Devourer; crafted in Eye of the North.
 * Fossilized Summoning Stone - summons a Raptor; crafted in Rata Sum.
 * Gelatinous Summoning Stone - summons an Ooze; crafted in Central Transfer Chamber.

Special events

 * Celestial Summoning Stone - summons a random Celestial ally; reward during finale of Canthan New Year 2010
 * Frosty Summoning Stone - summons a Snowman ally; quest reward and craftable by Will Brockman during Wintersday.
 * Mischievous Summoning Stone - summons a Grentch ally; quest reward and craftable by Will Brockman during Wintersday.