If I use Charm to move an opponent's unit (Kai'sa) to a battlefield with my unit (Sprite), and then the opponent kills my unit with a spell on my turn (like Ray or Void Seeker), does the opponent score a conquering point?

Ruling: If you charm an enemy unit to a battlefield and they end up in control of it, even on your turn, they score it.

Nuances:

• This applies even though the conquering happens during the active player's turn
• The interaction works with instant-speed removal spells like Ray or Void Seeker that can be played on the opponent's turn