Wondrous item, Rare

This magical crystal is naturally found in underground deposits scattered throughout Rodozem. While this rare, precious stone has a raw affinity for enchantment when properly cut, little is known about its true magical capabilities. Alatnir is notorious for its elusive appearance, as the crystal can only be seen in the dark, where its outline faintly shimmers with arcane potential. It becomes invisible in the presence of light—because it absorbs the light itself. A skilled arcanist can tap into the crystal’s lesser-known property, engulfing the alatnir in ethereal blue flame to create a light source. 

Much of the world doesn’t understand the power and potential of atatnir crystal. It is very difficult to sell at a price that matches its rarity, and most merchants will avoid trading it at all. 

Invisible Light Source. While in bright or dim light, the crystal is invisible. In darkness, the crystal emanates a faint blue glow. A detect magic spell allows the caster to see the crystal’s outline in any light. 

Mining Alatnir. Alatnir crystals can only be mined with magical equipment. It has the delicacy of glass, and attempting to cut alatnir with mundane tools causes it to shatter into dust. However, it absorbs magic and is impervious to arcane forces. An alatnir crystal has AC 13, immunity to spells and other magical effects, and immunity to poison and psychic damage. 

Mysterious Arcane Potential. Arcanists who studied this rare crystal discovered a way to harness some of its magical potential, but much is still unknown about 134 The Devil´s Bridge the substance and its properties. A creature proficient in the Arcana skill can use its action to make a DC 11 Intelligence (Arcana) check, tapping into the alatnir’s potential on a success. The crystal is engulfed in harmless blue flames and sheds bright light in a radius dependent on its size, and dim light for the same number of feet beyond that. The light lasts until a creature uses an action to end the effect. 

A Tiny crystal sheds bright light in a 10-foot radius and dim light for an additional 10 feet, and the radius increases by 10 feet for each size category it increases: 20 feet for Small, 30 feet for Medium, 40 feet for Large, 50 feet for Huge, and 60 feet for Gargantuan. 

Light Absorption. If the crystal is targeted by a spell of 1st level or higher, it absorbs the magic and turns it into light. The alatnir’s radius of light increases by an additional 30 feet for each level of the spell it absorbs. For example, a 3rd-level spell increases the radius by an additional 90 feet.