I bought three leaf stones to evolve one of my gloom's into a vileplume, my weepinbell into a victreebel and finally an exeggcute into a exeggutor whenever i managed to catch one. i did buy one sun stone to evolve my other gloom into a bellossom as well.
Adventure, Friendship, Pokemon
"exeggutor, gardevoir, bronzong or a malamar would be powerful enough, so long as they could gain the attention of the townsfolk. outside of psychic-types, there are others they could use but that is a whole myriad of possibilities.
Absol, Alolan ninetales, Dugtrio, Floatzel, Flygon, Greninja, Lucario, Pokemon, Primarina, Raichu, Story Series, Team Valiant, Umbreon, blaziken, espeon, lopunny, zoroark