Stone of Three

This crystal repels the magic of the world, while within 10 ft of a crystal the folowing effects apply:

• May target creatures in aura, with disadvantage.
• Dispells effects on creatures.
• Magic items cease to function while within the aura.
• A creature or object summoned or created by magic is paralysed while in the aura of this item.
• Teleportation and planar travel fail to work in the aura, whether this is the destination or the departure point for such magical travel. A portal to another location, world, or plane of existence, as well as an opening to an extradimensional space such as that created by the Rope Trick spell, temporarily closes while in the aura.
• Spells cannot be cast while in the aura
• The area of another spell or magical effect, such as Fireball, strugggles to extend into the aura. Creature tham must make a save have advantage in the aura.