If a Pokémon with the ability Flame Body or Magma Armor is present in your party, the steps it takes for an Egg to hatch will be halved. A Ditto with these IVs may be obtained here or by chaining using SOS encounters for some time. This will come into effect more when we learn about breeding perfect Pokémon. Having access to a Ditto with 31 IVs in 5 or 6 stats is strongly encouraged because Ditto can breed with almost any Pokémon, as well as being required to breed genderless Pokémon. Pokémon in this Egg Group can't breed at all. Undiscovered Group: Some examples include Mew, Ho-Oh, Deoxys, Mesprit, Zekrom, Yveltal, and Lunala.Water 3 Group: Some examples include Tentacruel, Corsola, Cradily, Drapion, Carracosta, Barbaracle, and Crabominable.Water 2 Group: Some examples include Seaking, Lanturn, Sharpedo, Lumineon, Basculin, Malamar, and Wishiwashi.Water 1 Group: Some examples include Poliwrath, Mantine, Gorebyss, Floatzel, Greninja, and Araquanid.Monster Group: Some examples include Kangaskhan, Tyranitar, Aggron, Rampardos, Haxorus, Aurorus, and Salazzle.Mineral Group: Some examples include Golem, Steelix, Shedinja, Probopass, Gigalith, Aegislash, and Minior.Amorphous Group: Some examples include Muk, Magcargo, Swalot, Banette, Eelektross, Gourgeist, and Mimikyu.Flying Group: Some examples include Pidgeot, Crobat, Swellow, Staraptor, Sigilyph, Noivern, and Oricorio.Grass Group: Some examples include Victreebel, Bellossom, Ludicolo, Tangrowth, Torterra, Ferrothorn, Trevenant, and Comfey.Human-Like Group: Some examples include Hitmonlee, Gardevoir, Toxicroak, Electivire, Conkeldurr, and Hawlucha.Ditto Group: Ditto is the sole Pokémon in this Egg Group.Field Group: Some examples include Raticate (both formes), Typhlosion, Manectric, Luxray, Stoutland, Pyroar, and Lycanroc.Fairy Group: Some examples include Clefable, Azumarill, Delcatty, Roserade, Whimsicott, Carbink, and Ribombee.Dragon Group: Some examples include Charizard, Kingdra, Salamence, Hydreigon, Goodra, and Kommo-o.