Can you change your chosen champion after legends are revealed during setup, and do both players mulligan at the same time or in turn order?

Ruling: You reveal legend and chosen champion at the same time, so you cannot change your chosen champion after legends are revealed. Mulligan is done in turn order, not simultaneously.

Sequence:

• Reveal legend and chosen champion simultaneously
• Players mulligan in turn order (one after another)

Nuances:

• In tournament play, every game 1 of a match must use the same chosen champion