Nine Lives

"The shooting hundred heads" is the most trusted Noble Phantasm of the Heroic Spirit Herakles. It is the bow and arrows used to exterminate the hydra and its nine heads that would grow back to matter how many time you would cut them down; he later ports that attack to be able to use it with weapons such as a giant sword.

Herakles could make a splendid use of that attack if his class was Saber. That secret skill was used with the projected axe-sword to kill the blackened Berserker.

Source: Fate/Side Material encyclopedia entry (p.68)