aight.
Delta Scyther is pretty good, especially with hustle+hone claws. it also has incredible offensive typing so theres that too
PS: DO NOT USE DELTA SCIZOR, scyther is overall better due to its stats.
you can evolve it if you want but scyther is strictly superior
Delta Gardevoir is also a rly good mon. Stab boltbeam is very handy and its got decent coverage. You can go for Gallade but the moves it gets arent as good. You get delta ralts in route 4, in a small house
you’ll have type overlap tho if you decide to use scyther to so bear that in mind.
Delta Crustle is very powerful. with one shell smash, it becomes obscenely powerful and hits like a truck. if you manage to get its hidden ability simple (by asking someone to give it its HA or asking for a d.crustle that already has it), and give it a white herb…
say goodbye
you can get a d.dwebble by trading a totodile with the man on route 4
Delta ambipom isnt all too special and evn with its HA, technician its not great after early game. tho almost unresisted stab in cool. you can a d.aipom in suntouched city, by luring it with honey. you can get honey somewhere in route 3 i forget
and lastly
Delta roserade. you get d.budew in utira library, in some hidden pathway if you interact with a loose book in the extreme west wing iirc. so its a bit late but trust me, its a BEAST. it gets shadow dance which double speed in new moon. remember B/W sand rush excadrill? d.rose is exactly that.
Now these aren’t ALL the good mons to use. ive excluded reg mons but mons like mega typhlosion are an absolute powerhouse. i included only delta cuz those were the only ones i remember of the top of my head lol i played through the game using only deltas, except the beginning of the game when you don have access to them, and im assuming you are too. altho some fan megas are rly to play with. oh and dont even get me started on armors, those are badass