When ganking, if you move your only unit out of a battlefield, can you play a new unit to that now-empty battlefield after the move?

Ruling: No, you cannot play a unit to a battlefield after your ganking unit leaves it empty. When you no longer have any units at a battlefield, you lose control of it, and you can only play units to battlefields you control.

Sequence:

• Your unit ganks and moves to another battlefield
• The original battlefield becomes empty
• You lose control of that battlefield
• You cannot play units there anymore

Nuances:

• Standard Move (like ganking) does not use the chain, so you cannot use reactions in response to play a unit
• If you move with a spell (like Ride the Wind), you could play a unit with Reaction before the spell resolves, because spells create a chain