What is the official order of events for game start in Riftbound?

Ruling: The official game start sequence is: Reveal Legend, Reveal Chosen Champion, Reveal chosen Battlefields (this is when you choose them), Shuffle decks, Determine player order (a player is designated at this point to decide turn order, after seeing battlefields), Draw 4 and mulligan (first player decides first), Start play.

Sequence:

• Reveal Legend
• Reveal Chosen Champion
• Reveal chosen Battlefields (choosing happens at this step)
• Shuffle decks
• Determine player order (designate a player who then decides turn order after seeing battlefields)
• Draw 4 cards, mulligan (first player decides their mulligan first)
• Start play

Nuances:

• You decide turn order knowing what the battlefields are (not before revealing them)
• The player who decides turn order is designated during setup as part of determining turn order, not before game setup begins
• In games 2 and 3 of a match, the loser of the previous game decides turn order
• In game 1, a designated player (determined during this step) decides turn order