Moon Twilight Flash

Moon Twilight Flash was a unique attack. This attack is unnamed in the Japanese dub, but in the ViZ English dub, Sailor Moon calls out Moon Twilight Flash.

Characteristics
Sailor Moon reflects moonlight in the red gem on her tiara and send it on to her enemy destroying it.

Moon Twilight Flash has only been used once against Nephrite's Soul Shadow Youma, though she did try to use it against Zoisite.