Can I play this 【Main】 effect and only choose an enemy Unit if I don't have an active Unit in play?

Name: The Stubborn Cog
Brand: Bandai
SKU: GD01-103

The Stubborn Cog

Mobile Suit Gundam Unicorn

Cost

MainChoose 1 active friendly (Earth Federation) Unit and 1 active enemy Unit. Rest them. Pilot[Daguza Mackle]

Q153 · July 11, 2025 Updated
Q. Can I play this 【Main】 effect and only choose an enemy Unit if I don't have an active Unit in play?
A. No, you cannot.