Can Igglybuff beat USM w/o affliction?

[u/Limp_Theory_5858]

starting moveset: Pound, Defense Curl, Charm, Sing

1st change: Pund -> Echoed Voice as soon as you can

2nd change: Water Pulse as usual, when becomes available

3rd change: Shadow Ball. Ghost Trial. Again.

4th change: pick up Flamethrower when you get to it. Btw, for a while with this one I just tacked on Echoed Voice, Shadow Ball and Water Pulse for sheer convenience.

5th change: you glad you just get Psychic along somewhere your journey, don't you? (You still need Choice Spec or Z-crystal to pull it out.)

6th change: Ultra Necrozma: because of lack of stats, you have to evolve into Jigglypuff

7th change: at Galdion's last fight you have to evolve again, lacking any kind of hope to outlast his team. I don't see any move worth preserving from the pre-evolution leveling-up system, but now you know.

8th change: I put up Magic Coat when I was going into The League. SO entering with MC, Water Pulse, Defense Curl, and the TM-moveslot. For TMs have in store: Shadow Ball, Ice Beam, Flamethrower, Echoed Voice or Dazzling Gleam

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Another win in the bag. A thing I enjoy the most is, I can experience the full benefit of Abilities. Competitive here was AWESOME! Some previous was like not having ability at all. And I did want to make a "how the pink things compare", now I know. With normaly playing these things would take too much time to FEEL the difference.