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Stall
Stall teams are based off of residual damage. This damage can come in many forms, including: sandstorm, hail, Toxic Spikes, Spikes, and Stealth Rock. The majority of Pokemon on a team like this will have good defenses and contribute to the overall goal of indirectly fainting the opponent's team. Tactics include using Ghosts to block Rapid Spin (a move which can eliminate entry hazards), setting up entry hazards as fast as possible, and using Pseudo-Hazing (Phazing) moves, such as Perish Song, Whirlwind, and Roar.
Balance
This type of team does not rely on any single type of Pokemon. Generally speaking, balanced teams have a couple of sweepers, backed up by a number of walls and/or tanks. Most teams of this type will utilize a form or two of entry hazards. The most successful balanced teams often revolve around a certain threat, while the other teammates seek to help guarantee a sweep by the said threat.