A yellow marker floating above a character's head declaring them unkillable, worn by Princess Vinata in Khepri's temple.
When Carl burst into the Temple of Khepri, he learned that his portal Visual Analysis screenshots had not rendered notifications above anyone's head — a blind spot that hid the room's real defenses. Princess Vinata and the other nagas all carried a long line of protection blessings, and distressingly, she held the yellow Immortal Tag over her head.
Moments later Carl wore the same yellow glow himself, granted the ninety-second Temporary Effect from Khepri, and locked eyes with her across the infinite table — both of them, for the moment, unkillable.
A yellow tag hovering above the head, matched by a yellow glow over the body.
Renders Carl's target unkillable at the moment he finally reaches her.