I suggest moving Seismitoad to B rank. It's one of the best rain sweepers around due to it's fantastic coverage in 3 moves. It's got one 2 of the best STABs in the game-Water and Ground- as well as the ability to beat the Grass-types that often give rain teams trouble with Sludge Wave. It can also run Stealth Rock, which helps with dedicated offensive teams. However, it's 4x weak to Grass moves, which are seen on such NU staples as Cinccino, Amoonguss, and Ludicolo.
@Snowflakes: Gali: help my cat's stuck in a tree
@Snowflakes: too good
+Feranfell: 10/10 gali