When a unit moves to a battlefield and an opponent uses Ride the Wind to move a unit there in response, who is the contestor?

Ruling: The player who moved their unit first (Soaring Eagle) is the contestor. That player applied the contested status to the battlefield, making them the attacker.

Sequence:

• Player moves Soaring Eagle to Zaun Warrens
• Opponent responds with Ride the Wind to move Darius to Zaun Warrens
• The first player (Soaring Eagle's controller) is the contestor/attacker