Crystal Cage of Hash Hala

When a creature the Bearer can see hits them or one of their allies with a melee attack the Bearer can use their reaction to trap the creature within a crystalline cage just large enough to fully contain the target creature.

A creature caught within the cage is considered restrained and can only escape by shattering the cage. The cage has an AC equal to that of the Bearer's. 

To shatter the cage the trapped creature must successfully hit the cage with either bludgeoning or thunder damage 3 times 

Escape through bludgeoning damage will cause damage to the trapped creature equal to their damage roll + 1d8 piercing damage

Escape through thunder damage will cause damage to any hostile creatures within 15 feet of the cage equal to the trapped creatures damage roll + 1d8 piercing damage 

When the cage shatters it deals 1d8 slashing damage and 1d8 bludgeoning/thunder damage (the damage type used to escape) to the trapped creature as well as any hostile creatures within 15 feet of the cage regardless of the type of damage used to escape