Can you swap your Chosen Champion between games in a match, as long as it matches your Champion Legend's tags?

Ruling: No, you cannot swap your Chosen Champion between games in a match. The Chosen Champion is part of the deck building process, similar to your Legend, and must remain the same throughout the match.

Nuances:

• While the rules don't explicitly forbid swapping between games, developer guidance indicates the Chosen Champion is locked in during deck construction
• The Chosen Champion must match your Champion Legend's tags during setup, but this doesn't allow for swapping between games