Assassin - Ichor and flee

“I shall cleanse... the heretic magi....”

As she spoke deliberately, she stood still, not moving for some few seconds. It seemed like she was allowing the magi time to flee—but they did not. In unison, they took a great leap backwards and unleashed the full force of their magical energies on the women. Witnessing this piteous sight, the black-robed Servant slowly shook her head, an almost-despondent look in her eye—

And yet, without a trace of mercy, she spoke words of power.

“Ichor of Reverie.”

And then—silence descended upon the chamber. The black-clad Servant was surrounded by the corpses of magi. All of the mages that had tried to release their magical energy upon her had —for some reason— been consumed by their own mighty flames. Their remains were strewn about the floor. The only one who had any idea what happened was the Servant. She hastened up the stairs out of the basement, still silent.

She reverted to her spirit form, and, unseen by anyone—

She raced off into the darkness of the night. She, who once had no direction in her life, had finally found a definite purpose.

***

Fate/Strange Fake, Volume 1, Prologue 3: Assassin