Volibear, Furious

103.3.b.1. This includes your Chosen Champion. Example: A deck could include Volibear, Furious as its Chosen Champion and still include 2 more copies of Volibear, Furious in their Main Deck.

359.3.e.9.a. If another spell or ability attempts to reference the number of game objects, players, or zones that a Finalized Chain Item targets, it will include any mistargeted choices in the zone specified implicitly or explicitly by the instruction that targeted them, but not any targets that have changed to or from a non-board zone. Example: When a player moves their Volibear, Furious to an occupied enemy battlefield and combat initiates, Volibear's attack trigger goes on the chain targeting three of the units at that battlefield. In reaction, the defending player plays Flash moving two of the three units back. That player cannot then target the attack trigger with Repulse, which reads "Choose a friendly unit at a battlefield. Counter an enemy spell or ability that chooses it and no other friendly unit." If the defending player instead played Heedless Resurrection twice, killing the two units, Repulse can legally target the attack trigger, because two of the targets have changed to a non-board zone.

715.3. If the Deal action Splits damage, then the Bonus Damage applies to the amount of Damage that will be Split. This can alter the number of targets eligible to be chosen. Example: Volibear, Furious is a unit that says in part "When I attack, deal 5 damage split among any number of enemy units here." A player attacks with Volibear, Furious while they also control Annie, Fiery, a unit that says "Your spells and abilities deal 1 Bonus Damage." Volibear, Furious now deals 6 damage split among any number of enemy units at its location, and can choose to split that damage among up to 6 units rather than the usual 5.