Tibbers

103.3.a.2. Must be a champion unit with a champion tag that matches the tag on your Champion Legend. Example: Loose Cannon has the tag Jinx. Therefore, a player could choose Jinx, Rebel or Jinx, Demolitionist as their Chosen Champion, because they also have the tag Jinx. Example: Tibbers has the tag Annie, but it is a signature unit, not a champion unit. It cannot be your Chosen Champion, even if your Champion Legend has the tag Annie.

135.2.e.6.c. A [C] shorthand on a card with multiple Domains is processed as any power of that card's Domains. Example: Defiant Dance is a Calm and Chaos spell. Its cost is [1][C]. The power component of that cost can be paid with either [G] or [P]. Example: Tibbers is a Fury and Chaos Unit. If Tibbers is granted the Accelerate keyword, the power component of the optional additional cost can be paid with either [R] or [P].