- Master must deploy NPC Mysterious Heroine X (Alter) on the frontline.
- NPC Mysterious Heroine X (Alter) is at Level 80, has NP Level 3, Skill Level 8/8/8 and is equipped with the Craft Essence Camelot Lesson.
- At the start of the battle, the following effect will trigger:
- "I am an idol, am I?": Grant enemy Invulnerability, Increased Attack, Increased Defense and Invulnerability Pierce. [Permanent, Unremovable]
- "Unfortunately, I am also an idol": Remove all [Permanent, Unremovable] effects from the enemy
- A Starry Sky Full Of Idols: Increase ally Servant in the middle position Critical Damage, Critical Star Absorption and Gain Critical Star per turn.