This page lists significant move changes in Ultra Sun and Ultra Moon. A full, huge list of changed moves, is available at Project Pokémon. Credits for this highlighted list go to /u/Spineweilder.
Gen I Pokémon
- Sandshrew (regular and Alolan) get Hone Claws as an egg move.
- Paras gets Grassy Terrain as an egg move.
- Abra gets Psychic Terrain as an egg move.
- Oddish and Bellsprout get Strength Sap as an egg move.
- Ponyta gets High Horsepower as an egg move.
- Farfetch’d now gets First Impression and Final Gambit as an egg move.
- Grimer (regular and Alolan) get Power-Up Punch as an egg move.
- Cubone gets Curse as an egg move (probably added for Alolan Marowak).
Gen II Pokémon
- Feraligatr gets Liquidation as a tutor move.
- Hoothoot gets Mean Look and Hurricane as egg moves. Good for Noctowl.
- Ledyba gets Endure and Counter as an egg move.
- Hoppip gets Strength Sap as an egg move.
- Wooper gets Power-Up Punch as an egg move.
- Aipom finally gets Tail Slap as an egg move.
- Girafarig gets Psychic Terrain and Psychic Fangs as an egg move.
- Delibird gets Counter as an egg move. Hmm…
- Azumarill gets Liquidation as a tutor move.
Gen III Pokémon
- Zigzagoon gets Extremespeed as an egg move.
- Plusle and Minun get Tearful Look as an egg move.
- Numel gets Heavy Slam as an egg move.
- Mawile, Kecleon, and Cacnea get Power-Up Punch as an egg move.
- Tropius gets Dragon Hammer as an egg move.
- Zangoose gets Belly Drum as an egg move.
- Swablu gets Play Rough as an egg move.
- Roselia gets Power Whip as an egg move.
- Chimeco gets Crafty Shield and Perish Song as egg moves.
Gen IV Pokémon
- Very important, Bidoof now gets Mud Sport as an egg move!
- Turtwig gets Heavy Slam as an egg move.
- Chimchar and Buneary get Power-Up Punch as an egg move.
- Piplup gets Power Trip as an egg move.
- Riolu gets Meteor Mash as an egg move, so Lucario now has a somewhat better physical STAB for steel. Bullet punch is nice, but it’s nice to have something with a bit more power.
- Spiritomb gets Disable as an egg move.
Gen V Pokémon
- Serpior evolution line gets Defog as a tutor move.
- Tepig gets Burn Up as an egg move.
- Oshawott gets Sacred Sword as an egg move.
- Bouffalant gets Cotton Guard as an egg move.
Gen VI Pokémon
- Chespin and Froakie get Power-Up Punch as an egg move.
- Fennekin gets Psychic Terrain as an egg move.
- Flabébé and Dedenne get Tearful Look as an egg move.
- Spritzee gets Nasty Plot as an egg move.
- Swirlix gets Sticky Web as an egg move.
Gen VII Pokémon
- Decidueye now learns Phantom Force, Leaf Storm, and Shadow Sneak.
- Litten now learns Double Kick at level 16, and gets Power Trip as an egg move.
- Yungoos gets Ice, Fire, and Thunder Fang as an egg move.
- Cutiefly gets Powder and Sticky Web as an egg move.
- Wishiwashi gets Whirlpool as an egg move.
- Dewpider gets Sticky Web as an egg move.
- Toxapex gets Knock Off as a tutor move.
- Sandygast gets Curse as an egg move.
- Pyukumuku gets Spite as an egg move.
- Tsareena learns Power Whip at lv 53. Truly living up to the S/M name, since it also learns Punishment now.
- Silvally gets Frenzy Plant/BURASTO BURN/Hydro Cannon as a tutor move.
- Kommo-o learns Close Combat at lv 75 (Hakamo-o at lv 63), and gets Drain Punch as a tutor move.
- Mimikyu and Buzzswole get Drain Punch as a tutor move.
- Tapu Bulu gets Synthesis as a tutor move.
- Kartana gets Knock Off as a tutor move.
- Zeraora learns Close Combat at lv47. Why wasn’t it made an Electric/Fighting type??