Astrarium

Astrarium is an extremely rare and beautiful element that's found in meteors. It has extremely unstable magical properties. It's extremely fragile, and if damaged it will explode.

The explosion power varies. Every inch in size it gains 1 ft of blast radius, and 1d8 of damage. This is convenient for the entire world, since they usually form in small sizes at 1-4 inches in diameter.

The smallest crystals will have a blast radius of 1(5) ft, and will do 2d8 force damage. Beyond it's base radius, it will push creatures away instead of damage them. If the creature cannot be pushed out of the radius they take the damage. If a creature is pushed into an object by the explosion, it takes bludgeoning damage equal to ten times the feet pushed.


Any object or creature destroyed or killed by the explosion are reduced to a magical dust that can only be revived with a wish spell. Magic items are not affected. 

The dust can be used to deactivate the crystal, which explains why the majority of the crystals don't explode when landing. It can also deactivate less powerful magic items. The effects end when washed off.

The crystal itself is clear and has swirling rainbow colors.