Can Acceptable Losses be played without controlling any gear, and can an opponent flip a hidden Zhonya in response to kill it instead of their Aurora?

Ruling: Yes, Acceptable Losses can be played even if you don't control any gear because it doesn't target. An opponent can react by flipping Zhonya because players choose their gears at resolution.

Sequence:

• Acceptable Losses is played (doesn't require controlling gear)
• At resolution, players choose which gears to destroy
• Opponent can flip hidden Zhonya before choosing
• Opponent can then choose to destroy the Zhonya instead of Aurora

Nuances:

• The card doesn't target, so it doesn't check for valid targets when played
• Hidden gears can be flipped in response before gear selection occurs
• Gear selection happens at resolution, not when the card is played