Suicune

Water

Suicune's great defensive typing, fantastic natural bulk, and ability to easily stall out threatening attacks with Pressure make it a solid defensive Pokemon. Calm Mind allows Suicune to become also be a threatening sweeper. Its decent natural Speed can be invested into to allow it to outpace many threats such as Diggersby and Mega Swampert outside rain. Scald pressures physically offensive threats with burns, making it a great move to use with Calm Mind's Special Defense boosts. With the combination of Calm Mind, Pressure, and excellent bulk, Suicune can beat some of the biggest threats to Water teams, like Ferrothorn, one-on-one. At the same time, Suicune is very reliant on Scald to damage the foe, making any bulky Pokemon that resists it very hard for Suicune to break past. Without access to reliable recovery, Suicune is very quickly worn down by entry hazards and cannot reliably switch into attacks. Suicune is heavily reliant upon thorough team support and has to be used on specific builds to make it a threatening sweeper.