If I use Steenee's "Captivate" attack while Spikemuth stadium is in play, does the opponent put any damage counters on their Pokemon?
No, Captivate would not trigger Spikemuth since it was not moved during the opponent's turn.
CaptivateSpikemuth



x2
CaptivateSwitch the Defending Pokémon with 1 of your opponent's Benched Pokémon.

Fluffy TailThe Defending Pokémon is now Asleep.
If I use Steenee's "Captivate" attack while Spikemuth stadium is in play, does the opponent put any damage counters on their Pokemon?
No, Captivate would not trigger Spikemuth since it was not moved during the opponent's turn.