As with all new Pokémon generations, Pokémon Sun & Moon rebalances moves, stats and in the case of Pokémon Sun & Moon, Abilities. Click their names to go to the Ability page for it.

Name Description Alteration
Aerilate Normal-type moves become Flying-type moves. The power of those moves is boosted a little. The power boost has been decreased from 30% to 20%
Gale Wings Gives priority to Flying-type moves when the Pokémon's HP is full. The ability only activates when the Pokémon has 100% of its Hit Points remaining
Parental Bond Every move used by the Pokémon will hit twice. The damage inflicted by the second hit is reduced to 25%. Second hit only does 25% of the first hit's damage rather than 50%.
Pixilate Normal-type moves become Fairy-type moves. The power of those moves is boosted a little. The power boost has been decreased from 30% to 20%
Prankster Status category moves have their Speed Priority increased by 1 When targeting a Dark-type opponent, the move with priority now fails. The move will still work on Ally Dark-type Pokémon
Refrigerate Normal-type moves become Ice-type moves. The power of those moves is boosted a little. The power boost has been decreased from 30% to 20%
Weak Armor Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat. The Speed stat now increases by two stages