Totem Pokémon are the real bosses of Sun and Moon: an aura that boosts their stats, allies that arrive at the worst possible moment and moves chosen to exploit your weaknesses. Here is, Trial by Trial, how to beat them on the first try with the Pokémon you have on hand.
Three rules apply to all of them. First, take out the ally first if it heals or boosts the Totem Pokémon; otherwise, focus on the Totem Pokémon to end the battle. Second, save your Z-Move for the Totem Pokémon itself, as soon as you have one. Finally, arrive at the right level: one or two levels above the Totem Pokémon is enough, because the aura more than makes up for the gap.
Remember that a Trial takes preparation: you can leave the area to heal at the nearest Pokémon Center as long as you have not triggered the final battle.
