1.If there's one slot remains in your team, then u can fill a Lando-T.
2.If there's one slot remains in your team and you already has Lando-T, then u can fill a Great Tusk.
3.If there's one slot remains in your team,and you have both Lando-T and great tusk, then u can fill a Chansey/Blissey.
4.If there's one slot remains in your team,and you have Lando-T , great tusk and the egg, then u can fill a Dragapult.
5.If there's one slot remains and u have all pokemon above,then u can fill a scarf Ditto.