In a Showdown where opponent moves to an uncontested Vilemaw battlefield and I Ride the Wind a unit there, who is attacker/defender? If opponent stuns my larger unit, what happens - who recalls and who conquers?

Ruling: The opponent who initially moved to the uncontested battlefield is the attacker, and you (who used Ride the Wind) are the defender. If the attacker stuns your larger unit, the attacker's unit is recalled and you conquer the battlefield.

Sequence:

• Opponent moves unit to uncontested battlefield, applying Contested status
• You Ride the Wind a unit there, triggering Showdown
• Opponent is attacker (applied Contested status), you are defender
• If attacker stuns your larger unit, attacker's unit recalls
• You remain at battlefield post special cleanup and establish control
• You conquer the battlefield

Nuances:

• You can conquer the battlefield even though you were not the player who initially applied the Contested state to the battlefield