Planthy is a grass type legendary that is the final pokemon in your pokedx. heres how 2 get it: irst unlock benco city by beating the elite four 7 times.after you find the emerald there take it to pro. rowan and he will tell you that it unlocks a legendary pokemon. then go to wayward cave where mira was at. you will see an exit. go out there and it will be called mystic garden. get to the end of it and battle it at level 70.