A Cube with silver trim and a blackened wood body, part of which is pushed out, is pushed back into place, releasing a blast of dark energy. Anyone in a 30 ft cone in front of the user must make a CON Saving Throw (DC 16) and take 10d10 of force damage. On a success, they take half damage. On a fail, they take full damage and are knocked prone. After using this item, the user rolls a percentile die. If they roll a 15 or lower, they are hit by the blast. If they fail the percentile roll 3 times, the cube explodes, destroying the item and instantly killing the user, with only high-level magic being able to bring them back from the dead. This item can be used once per long rest.