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i think lefties is more useful than LO becuase ur using substitue. ur'll get warn down too fast unless u have a wish passer, even then hazards will wear u down
politoed- hpgrass for rotoms
tornadus- think hpice/grass wld help more instead of torment
dugtrio- if ur not using stealthrocks definately consider him using choiceband
volcarona- i think MorningSun wld be better than rest since ur prolly wont be switching too much wit it. Plus you can heal...