When an opponent casts Possession on a unit that has equipment attached, does the opponent also take control of the equipped gears?

Ruling: No, the opponent does not gain control of the equipped gears. The gears remain attached to the unit and their effects continue to apply, but the original owner retains control of the equipment.

Sequence:

• When Possession resolves on a unit with equipped gears, only the unit (top-most card) changes control
• The equipped gears remain attached to the unit until detached by a card effect or game effect
• The gear's effect text remains active on the possessed unit as long as it stays attached
• If the gear detaches (such as when the unit dies, is banished, or otherwise leaves the board), it is recalled to the original owner's base during cleanup

Nuances:

• The opponent cannot use effects like Jax or Weaponmaster to move the gear away from the unit because they don't control the gear
• The opponent does benefit from the gear's effect text while it remains attached to the possessed unit
• Control of the gear never changes, only the unit's control changes