Yo Frostmoth tears up the ladder?! Yes Sir! With access to Weather Ball (On rain), Quiver Dance and the ability ice scale it can beat its best counter Heatran. Got some other cool mons like Bulky offensive Zapdos, Kingdra and Specs Tornadus-T
https://pokepast.es/3850cf7abddd4b65
https://pokepast.es/3850cf7abddd4b65
Just look out for melmetal & urshifu rapid, they can mess up shuckle, otherwise self explanatory. gl and ty