Does my opponent get to take a prize if I use Golduck's "Entangled Dive" attack to discard each player's Active Pokemon?
No neither player takes any prizes; Entangled Dive doesn't count as a KO.
Entangled Dive



x2
Aqua Edge

Entangled DiveDiscard each player's Active Pokémon and all attached cards. (You choose a new Active Pokémon first.)
This Pokémon lives in gently flowing rivers. It paddles through the water with its long limbs, putting its graceful swimming skills on display.
Does my opponent get to take a prize if I use Golduck's "Entangled Dive" attack to discard each player's Active Pokemon?
No neither player takes any prizes; Entangled Dive doesn't count as a KO.