[[florence nightingale (fate)|Florence Nightingale]]'s Noble Phantasm in [[Fate/Grand Order]]. It depicts a large, ghostly woman wearing a nurse's uniform, who slams her sword upon the enemy. It doesn't cause damage, but debuffs the enemy while healing the party.

The actual Nightingale Pledge is a modified version of the Hippocratic Oath dedicated to nurses.
nightingale pledge (fate)