What is the correct start of game procedure for 1v1 Riftbound in Best of 1 and Best of 3 formats, and does the first player draw a card?

Ruling: For both Best of 1 and Best of 3, players reveal legends and champion units, then select/determine battlefield, then decide who goes first, then draw 4 cards and mulligan. The first player does draw a card on their first turn in 1v1 (but not in 3+ player games).

Sequence:

• Each player reveals legends and champion units
• Battlefield is determined (randomly in Best of 1, chosen by players in Best of 3)
• Decide who goes first
• Draw 4 cards and proceed to mulligan
• First player draws a card on their first turn

Nuances:

• In Best of 1, locations are chosen randomly from the location deck
• In Best of 3, players pick a location after seeing all legends and champion combinations, and each location can only be used once across the three games
• The battlefield is revealed before draw and mulligan
• The method of random battlefield selection can be anything as long as it's random
• First player only draws in 1v1; in 3-player and 4-player games they do not draw