Can I play a Quickdraw gear during my opponent's turn when I have no units on board?

Ruling: Yes, you can play a Quickdraw gear even when you have no friendly units on board. The gear will remain at your base.

Sequence:

• You play the gear to your base
• The "When you play this, attach" triggered ability attempts to trigger
• Since there are no legal targets, the ability cannot finalize
• The gear remains at your base unattached

Nuances:

• The triggered ability doesn't "whiff" (resolve with no effect) - it simply never finalizes due to lack of legal targets
• Gears can only be played to base initially; they would only move if the attach ability successfully resolves