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The Thieves Guild > Magic Items > Ioun Stone (Reserve)
A Dungeons & Dragons 5e Magic Item


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Ioun Stone (Reserve)

Wondrous item, rare (requires attunement)

Weight:
Estimated Value: 6,000 gp

This vibrant purple prism stores spells cast into it, holding them until you use them. The stone can store up to 3 levels worth of spells at a time. When found, it contains 1d4−1 levels of stored spells chosen by the GM. Any creature can cast a spell of 1st through 3rd level into the stone by touching it as the spell is cast. The spell has no effect, other than to be stored in the stone. If the stone can't hold the spell, the spell is expended without effect. The level of the slot used to cast the spell determines how much space it uses. When you use an action to toss one of these stones into the air, the stone orbits your head at a distance of 1d3 feet and you can cast any spell stored in it. The spell uses the slot level, spell save DC, spell attack bonus, and spellcasting ability of the original caster, but is otherwise treated as if you cast the spell. The spell cast from the stone is no longer stored in it, freeing up space. Another creature must use an action to grasp or net the stone to separate it from you, either by making a successful attack roll against AC 24 or a successful DC 24 Dexterity (Acrobatics) check. You can use an action to seize and stow the stone, ending its effect. A stone has AC 24, 10 hit points, and resistance to all damage. It is considered to be an object that is being worn while it orbits your head.

Source: DMG p176