Loose Cannon

Loose Cannon, the Jinx Legend, reads "At the start of your Beginning Phase, draw 1 if you have one or fewer cards in your hand." The conditional statement "if you have one or fewer cards in your hand," does not appear where we would expect in the sequence described above, so it is considered part of the effect and not the condition. This ability can be split into "At the start of your Beginning Phase," and "draw 1 if you have one of fewer cards in your hand."

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.

383.2.a.1. Any additional conditional statement immediately after the Condition must be true in order for the Condition to be fulfilled. Such a conditional statement is part of the Trigger Condition and not the Effect. Example: Sona, Harmonious reads "At the end of your turn, if I'm at a battlefield, ready up to 4 friendly runes." Her Trigger Ability's Condition will be fulfilled in the Ending Step, but the Triggered Ability will only be placed on the chain if she is located at a battlefield when the Condition is fulfilled. If she is removed in reaction to the triggered ability, it will still resolve. Example: Loose Cannon reads "At the start of your Beginning Phase, draw 1 if you have one or fewer cards in your hand." The "if you have one or fewer cards in your hand" conditional statement is not immediately after the trigger condition, so it is part of the effect and not the condition.