just a guess :3
I might use this for myself very soon. at first this togetic was just used for breeding for egg moves, but I noticed it had insane iv's and thought "why put this togetic to waste? I dont like togekiss but I'm sure I dont have to evolve togetic for it to be a beast" sooo
Ability: (mine has Hustle. I wish it didnt, but its fine. we wont attack much.)
Nature: (Again, mine has impish. it raises defense and lowers special attack, but its fine. as I said we wont be attacking much :3)
Evs: 252 Def 252 SpDef
i'd probably recommend toxic if you have hustle ability, but if you dont, ancient power is probably best :P
i'm probably going to use it as a team supporter, using wish to heal team mates. Encore is mainly just so the opponent doesnt get a free set up while you're using wish. Toxic worsens every turn, and I'm sure nobody likes being stuck with a toxic on their Pokemon. Or you could have protect so Togetic the healer can heal itself if its on low health c:
its quite hard to choose a moveset for Togetic to me because of other really useful moves like Yawn, Safeguard, or Follow Me in double battles. but I guess this moveset got chosen for a reason. ill just have to see how it works out.