>>33697224Any game with more than four HMs (aka every game until Sun and Moon) requires at least two HM slaves.
As for field moves in general
>Dig isn't necessary>Teleport isn't necessary>Soft-boiled isn't necessary>Milk Drink isn't necessary>Sweet Scent isn't necessary>Chatter isn't necessary>Headbutt is important>Secret Power is importantBasically, anything that can be accomplished through normal play (going to specific locations, healing, encountering wild Pokémon) isn't necessary. Only field moves that accomplish things you couldn't otherwise do (Headbutt on trees, Secret Power to open Secret Bases) should be on a Pokémon in addition to HMs.
