Resonant energies pulse from the glowing blue crystals embedded within this luminescent bone box.

Properties: 

While attuned to this, you gain immunity to thunder damage and you are immune to the Silent Song.

• Shattering Echo: (1/day) You may cast Shatter and Thunderwave at their lowest level without expending a spell slot. You may also cast these spells if you have spell slots. 

• Smothered Resonance: (1/day) When you take force damage, you may use your reaction to gain resistance to the damage.

FROM THE MIND OF OMEGA JONES

Notes: Immunity: Thunder, Delver of The Never Ending Dungeon