Template:InfoboxAttackBlack Vicious Crystal was a group attack that was performed by the Spectre Sisters and Esmeraude in the Sailor Moon musicals. The attack required the Evil Black Crystal.
In Pretty Soldier Sailor Moon ~ Birth! The Princess of Darkness Black Lady ~, the attack was performed by the Spectre Sisters (excluding Berthier, as she was not present in that musical) and Esmeraude. In the musicals revision, it was performed by all four Spectre Sisters.