If my opponent controls a conquered battlefield with a hidden Hidden Blade, and I use Dragon's Rage or Charm to move a unit from their base to that battlefield, and they Hidden Blade their own unit on that battlefield in response, will they gain a point for conquering it?

Ruling: Yes, they would gain a point for conquering the battlefield, provided you don't stop them during the showdown that follows.

Sequence:

• Charm goes on chain
• Hidden Hidden Blade goes on chain as a reaction
• Unit at battlefield dies
• They lose control of the battlefield immediately
• Charm resolves, new unit moves in
• Since they don't control the battlefield, it becomes contested and a showdown starts
• If they still have a unit there when that showdown ends, they conquer and score 1 point