If you play a unit to an opponent-controlled battlefield during a showdown on your opponent's turn, do you trigger a new showdown, who is the attacker, and can you score a point?

Ruling: Yes, you trigger a new showdown, you are the attacker, and you can score a point.

Sequence:

• The current showdown is not interrupted and resolves as usual
• When the current showdown is over and you're back in a neutral open state, the next "waiting" showdown begins

Nuances:

• This scenario requires somehow moving a unit to an enemy-controlled battlefield (Miss Fortune specifically only allows playing to open battlefields)