If an attacker conquers with 0 cards in deck and Zaun Warrens triggers while both players are at 7 points, who wins?

Ruling: The attacker wins if they have already scored the other battlefield this turn, because they score their last point (reaching 8) before the conquering triggers that would cause them to draw from an empty deck. If they haven't scored the other battlefield yet, they don't gain a point from conquering (staying at 7), but Zaun Warrens still triggers and they draw from an empty deck and lose.

Sequence:

1. Attacker conquers the battlefield
2. Attacker scores (gains control and hasn't scored this battlefield yet this turn)
3. If attacker already scored the other battlefield, they reach 8 points and win
4. Conquering triggers (like Zaun Warrens) resolve
5. If attacker didn't win in step 3, they must draw from empty deck and lose

Nuances:

• You always score when you conquer, even at 7 points. If you're at 7 and score a battlefield without having scored the other this turn, you don't get a point, but it's still considered scoring.
• Taking a battlefield you haven't yet scored this turn is always a conquer, regardless of your current score.