If I hold one Battlefield and I Ride the Wind to the other one, do I win or only if I hold?

To determine if you win by using Ride the Wind to move to the second battlefield, we must look at how the game handles winning the final point.

According to Rule 466.1.b.2 and RiftJudge FAQ #198/9058/7467, you cannot win the game on your opponent's turn by conquering a battlefield unless you have already satisfied the "final point" requirement: you must have scored on every battlefield within that same turn cycle.

Here is the breakdown of how this works:

1. The "Final Point" Restriction: When you are at 7 points, the 8th point is considered the "Winning Point." If you are attempting to gain this point through a Conquer action (which is what happens when you use Ride the Wind to move into and take control of a battlefield), you must have scored at every battlefield in the game during that turn.
2. What counts as "this turn": If you are attempting this on your own turn, you simply need to conquer/hold the first battlefield and then move to and conquer the second battlefield. You do not need to hold both battlefields simultaneously; you only need to have scored at both of them before the turn ends (FAQ #1793).
3. Attempting this on an opponent's turn: If you are at 7 points and attempt to use Ride the Wind on your opponent's turn to score your final point, you cannot satisfy the requirement because it is impossible to have scored at every battlefield during your opponent's turn. Consequently, you will not win the game; you will draw a card instead (FAQ #198, FAQ #9781).

Summary:

• On your turn: You win if you score both battlefields sequentially. You do not need to hold them simultaneously (FAQ #1793).
• On your opponent's turn: You cannot win the game by conquering, even if you move to the second battlefield. You will draw a card for the successful conquer, but you will remain at 7 points (FAQ #198, FAQ #9781).