I'm playing with Draven, my opponent goes to an open Battlefield, I use Ride the Wind to defend, If I win this combat, do I draw a card with Draven?

Yes, if you win the combat, you will draw a card from your Draven (Glorious Executioner) legend ability.

Ruling and Reasoning

According to the FAQ regarding Draven, Legend (Glorious Executioner):

• Ruling: Yes, you draw a card. Combat does not end immediately when one player has no units at the Battlefield. Draven Legend checks at the end of combat, and if the opponent's unit was moved to Base, you have won that combat.
• Requirement: You win a combat if only your units remain at the battlefield after combat cleanup and all derived cleanups have occurred.

Sequence of Events

1. Opponent moves to an open battlefield: A showdown begins.
2. You play Ride the Wind: You move your Draven unit to that battlefield to defend.
3. Combat Resolution: The combat proceeds through the Showdown and Combat Damage steps.
4. Combat Cleanup: After combat damage is dealt and any triggered abilities (like those from Ride the Wind or combat triggers) resolve, the game checks the state of the battlefield.
5. Winning Condition: If only your units remain at the battlefield, you are declared the winner of the combat.
6. Legend Ability: Your Glorious Executioner legend ability triggers because you won the combat, and you draw one card.

Important Note: As per the rules, Draven must remain at the battlefield when combat concludes for his ability to trigger. Since you used Ride the Wind to move him there to defend, as long as he is not moved away again before the combat ends, he will be present to trigger the draw.