For Lucian's Relentless Pursuit, what does 'You may attach an Equipment with the same controller to it' mean, and can you attach an equipment that's already on the board to a unit without equipment?

Ruling: The "same controller" restriction prevents you from attaching an opponent's equipment to the moved unit. You can attach an equipment that's already on the board to the unit you move, as long as both the equipment and unit have the same controller.

Nuances:

• In 1v1 matches, all friendly units and equipment share the same controller, so this restriction doesn't typically matter
• In 2v2 matches, this prevents you from moving your teammate's unit and then equipping your equipment to it
• Without the "same controller" restriction, you could attach an opponent's equipment