In 2v2, if my teammate controls a battlefield during an opponent's turn, loses control, and then I conquer it during that same opponent's turn (e.g., with Ride the Wind), do I score a point?

Ruling: Yes, you score a point. The rule preventing scoring on teammate-controlled battlefields only applies during your own turn, not during opponent turns.

Nuances:

• Rule 446.1.a (442.1.a in v1.1) appears to be missing the word "your" before "Beginning Phase" which creates ambiguity
• Rule 466.8.b (462.8.b in v1.1) clarifies this only applies to the turn player's own turn
• The intent is to prevent teammates from passing control between themselves on their own turns to double-score, not to prevent scoring during opponent turns
• This has been added to the Official Rules Document (ORD) feedback for clarification