Quoted By:
Cynthia is using Gastrodon, Milotic, and Garchomp against Iris. Iris will take out Gastrodon and Milotic, but fall to Garchomp. Then against Ash, Cynthia will use Garchomp and two of the Pokemon she didn't use against Iris (Glaceon, Kommo-o, and Roserade). Most likely the latter two since they debuted in this season in the Multiverse and Arceus arcs respectively.
That way Iris takes out 2/6ths of Cynthia's team, and Ash takes out 3/6ths of it, leaving only one of Cynthia's Pokemon (probably Glaceon) without an on-screen loss.
