If you hold a battlefield at the start of turn, then pull that unit back and send a new unit to the same battlefield, can you conquer it to score again and draw a card?

Ruling: You can only score a given battlefield once per turn, regardless of whether you hold or conquer it. If you already scored a battlefield by holding it, you cannot conquer it again that turn.

Nuances:

• Conquering is part of scoring, so if you cannot score a battlefield (because you already scored it), you cannot conquer it
• You will not draw a card from the conquer effect if you already scored that battlefield earlier in the turn