A look at synergy:
You have a Ground weakness, and no resistance to Electric. This is a serious problem if you want to have a reliable switch-in to Zapdos or Thunder Dragonite. Rain teams in general will bring this team to its knees, as only Rotom-W is your team's reliable counter to Tornadus, Rotom-W, and Gastrodon. Dragonite walls your team completely as you lack ice moves, and Conkeldurr is basically unresisted.
If you're creative, don't copy and paste this into your signature (Started by 3.14kachu).