Ferrothorn

Ferrothorn's amazing defensive typing and Iron Barbs ability allow it to check common Pokemon in the metagame, such as Landorus-T, Mega Metagross, and Rotom-W. Ferrothorn's typing makes it immune to Spore and Rage Powder and makes it one of the best checks to rain teams; Ferrothorn is also an amazing asset on rain teams due to the rain weakening Fire-type attacks and its synergy with Kingdra. Ferrothorn, however, is easily checked by common Pokemon such as Mega Charizard Y and Heatran. Ferrothorn also faces competition from Amoonguss as a bulky Grass-type. On the other hand, Ferrothorn is a Pokemon of extremes; you either can't touch it or it can't touch you.