If a player flips a hidden Teemo in response to Blitzcrank pulling their last unit away from a battlefield, does that player score a point for conquering the battlefield with Teemo?

Ruling: No, you do not score a point. Control of the battlefield does not change, so you do not conquer it.

Sequence:

• If you flip Teemo in response to Blitzcrank's pull (before it resolves), Teemo enters the battlefield while you still control it
• Since you already controlled the battlefield, this is not a conquest and does not score a point
• If you tried to flip Teemo after the pull resolves and the battlefield becomes empty, the hidden card would be discarded as part of cleanup before you could play it

Nuances:

• Hidden cards are discarded during cleanup when a battlefield becomes empty, so timing matters for when you flip the hidden card