Can you choose which version of your Legend to use as your Chosen Champion in game 1, and can you see your opponent's Legend before placing your Chosen Champion during setup?

Ruling: In competitive tournaments with deck registration, your game 1 Chosen Champion must always be the same and cannot be changed. In non-competitive tournaments without deck registration, you can choose which version of your Legend to use as your Chosen Champion at the start of each round.

Nuances:

• The Chosen Champion is part of deck registration and you cannot sideboard before game 1
• In Bo1 formats, you cannot sideboard at all
• The ability to choose between Legend versions only applies when deck registration is not required