Are Battlefields revealed before determining Turn Order?

Ruling: Yes, Battlefields are selected, placed, and revealed before Turn Order is determined.

Sequence:

• Legend selection
• Champion selection
• Battlefield selection and placement (revealed when placed in the Battlefield Zone)
• Turn Order determination
• Draw cards
• Mulligan

Nuances:

• Some players incorrectly place Battlefields face down before determining Turn Order and then flip them, but this is not the correct procedure
• Battlefields become public knowledge when placed in the Battlefield Zone