The typical
crystal ball, a very rare item, is about 6 inches in diameter. While touching it, you can cast the
scrying spell (save DC 17) with it.
The following
crystal ball variants are legendary items and have additional properties.
Crystal Ball of Mind Reading. You can use an action to cast the
detect thoughts spell (save DC 17) while you are scrying with the
crystal ball, targeting creatures you can see within 30 feet of the spell's sensor. You don't need to concentrate on this
detect thoughts to maintain it during its duration, but it ends if
scrying ends.
Crystal Ball of Telepathy. While scrying with the
crystal ball, you can communicate telepathically with creatures you can see within 30 feet of the spell's sensor. You can also use an action to cast the
suggestion spell (save DC 17) through the sensor on one of those creatures. You don't need to concentrate on this
suggestion to maintain it during its duration, but it ends if
scrying ends. Once used, the
suggestion power of the
crystal ball can't be used again until the next dawn.
Crystal Ball of True Seeing. While scrying with the
crystal ball, you have truesight with a radius of 120 feet centered on the spell's sensor.