All Legal Fully-Evolved Pokémon:

Ariados
Banette
Bastiodon
Beartic
Beautifly
Beedrill
Bellossom
Bibarel
Butterfree
Carbink
Carnivine
Castform
Cherrim
Chimecho
Corsola
Dedenne
Delcatty
Delibird
Dewgong
Ditto
Dunsparce
Dustox
Emolga
Farfetch'd
Fearow
Furfrou
Furret
Gigalith
Girafarig
Glaceon
Glalie
Gogoat
Golduck
Gothitelle
Gourgeist-(Normal, Large and Small)
Heatmor
Huntail
Hypno
Illumise
Jumpluff
Kricketune
Ledian
Lopunny
Lunatone
Luvdisc
Luxray
Magcargo
Maractus
Masquerain
Meganium
Meowstic-(M & F)
Mightyena
Minun
Mothim
Noctowl
Octillery
Pachirisu
Parasect
Persian
Phione
Pidgeot
Pikachu-Cosplays
Plusle
Politoed
Raticate
Sawsbuck
Seaking
Seviper
Shedinja
Simipour
Simisage
Slaking
Solrock
Spinda
Stantler
Sudowoodo
Sunflora
Swalot
Swoobat
Tropius
Unfezant
Unown
Vanilluxe
Vespiquen
Volbeat
Wailord
Walrein
Watchog
Whiscash
Wigglytuff
Wobbuffet
Wormadam-(all forms)

All NFE and Little Cup Pokémon are legal excluding the following:

Chansey (OU)
Gligar (UU)
Porygon2 (UU)
Fletchinder (RU)
Magneton (RU)
Sneasel (RU)
Togetic (RU)
Ferroseed (NU)
Gurdurr (NU)
Haunter (NU)
Piloswine (NU)
Scyther (NU)
Machoke (PUBL)
Vigoroth (PUBL)
Clefairy (PU)
Combusken (PU)
Gabite (PU)
Kadabra (PU)
Metang (PU)
Misdreavus (PU)
Monferno (PU)
Pawniard (PU)
Prinplip (PU)
Roselia (PU)
Tangela (PU)
Vullaby (PU)
Fraxure (ZUBL)