Mythallars were a Human invention during the Age of Wonder, inspired by the Elven Mythal enchantment. A mythallar looked like an enormous crystal ball typically mounted on an enchanted pedestal of some kind. The globe shed bright light in a 300-foot radius and dim light for an additional 300 feet. The globe drew magic from the Weave that could be harnessed for various purposes. The bigger the mythallar, the more magic it could hold. The largest mythallars were 150 feet in diameter.

Mechanics & Inner Workings

To attune to a mythallar, a creature needed to finish a short rest within 30 feet of it, meditating on the mythallar. Up to eight creatures could be attuned to it at one time; otherwise, a mythallar followed the attunement rules in the Dungeon Master’s Guide. If a ninth creature tried to attune to the mythallar, nothing happened.   All creatures attuned to a mythallar would immediately sense when it was being used. A creature attuned to the device could use any of its properties, but only if all other creatures attuned to the device agreed to allow it.  

Touching the Mythallar.

Any creature that touched the globe of the mythallar needed to make a DC 22 Constitution saving throw, taking 180 (20d10 + 70) radiant damage on a failed save, or half as much damage on a successful one. Undead had disadvantage on this saving throw. Any object that touched the globe, other than an artifact or the mythallar’s cradle, was disintegrated instantly (no save).
Item type
Very Rare+


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