Spark Phrax holds the essence of lightning. This phrax only comes after a lightning bolt strikes the earth. It can often be found at the tops or peaks of mountains. An artificial storm, when strong enough, can be used to produce them.
Attaching it to your armor or clothing grants an additional 1d4 lightning damage to all unarmed strikes.
As an action, you can throw this crystal up to 30 feet, shattering it on impact. Make a ranged attack against a creature or object, treating the Spark Phrax as an improvised weapon. On a hit, each creature within 10 ft of the intended target must make a DC 15 Dexterity saving throw. On a failure they take 4d8 lightning damage and are paralyzed, they may make a DC 15 Constitution saving throw at the end of their turns to over come the paralysis. On a success the creatures take 2d8 lightning damage.
On destruction the terrain becomes magnetized, roll 1d4. The ground in a 15ft radius becomes magnetized with one of the following effects based on the outcome. this effect lasts for the next half an hour
On an even number the destruction causes the area to be difficult terrain for all creatures wearing or holding metal on them, and making all attacks with metallic weapons are done with disadvantage.
On an odd number the destruction causes the same radius to be repulsive to metals, any creature wearing or holding metal are elevated 10ft off the ground as if they were under the levitate
when combined with melee weapons or ammunition the next successful attack deals an extra 2d8 lightning damage.
The crystal can be used to create and maintain devices and mechanical constructs.