Can I score an extra conquer point by using Gust to return my unit from a battlefield during my opponent's turn (making it open), then using Ride the Wind to move another unit to that now-open battlefield?

Ruling: Yes, you can score a conquer point this way. Each battlefield can only be scored once per turn, but when a battlefield becomes uncontrolled and is then conquered again, it can be scored. However, you cannot use Gust "out of nowhere" - it must be played as a reaction to something (like a Ballista trigger or during a showdown).

Sequence:

• During your turn, you conquer battlefields and score points
• During opponent's turn, you react to a trigger/event by playing Gust to return your unit from battlefield A
• Battlefield A becomes open/uncontrolled
• You play Ride the Wind to move a unit from battlefield B to battlefield A
• You score a conquer point for battlefield A

Nuances:

• Gust must be played as a reaction to something; you cannot play it without a trigger
• If you use Gust during a showdown where you are the defender, you never lost control of the battlefield, so this wouldn't work
• A battlefield is either controlled, uncontrolled, or contested (temporarily)
• This does not violate the "2 points per turn" concept because battlefields can be scored once per turn, and this occurs on a different turn (opponent's turn)