Mal Oretsev is revealed to be the Firebird amplifier, a pivotal plot twist in the Shadow and Bone series. This significant revelation unfolds in season 2, episode 6 of the show.
During this key moment, Baghra, a character with deep knowledge of Grisha magic and its history, explains the true nature of the Firebird. She clarifies that her sister was brought back to life using merzost, a forbidden and dangerous form of magic. This act of resurrection transformed Baghra's sister into the third amplifier. It is through this lineage and a profound connection to this ancient magic that Mal is revealed to embody the Firebird amplifier himself, making him a living amplifier crucial to the overarching narrative.