Legendary

Selune's Tears

Magic Artifact

Grieving Lament. (1 Action) For 1 minute, those hostile to you within Reach 4 have Disadvantage on WIL saves.

Eternal Seal. (3 Actions, 1 each over 3 consecutive turns) A creature within Reach 2 must make a DC20 WIL save or become sealed within the artifact. Once sealed, the artifact becomes Sealed.

Note: Attempting to use the artifact while it is occupied will cause it to become Unsealed, releasing the held creature.