In a Sudden Death game, if I add prizes to my opponent's field with Nihilego GX's "Symbiont GX" attack, is the game won by the next player to take a prize, or the first player to take their last prize?

A Sudden Death match is complete when a player has taken all of their prizes, regardless of whether there is more than one or not. So adding prizes in this scenario makes it more difficult for the opponent to win.

Relevant cards

SMA_SV62