Archaludon

Archaludon is rarely seen but fits this team well, combining with Greninja's Water Shuriken to stack its own Stamina Defense boosts immediately at the start of a game. Snarl replaces the more common Flash Cannon specifically to disrupt opposing teams trying to boost their own Special Attack, and a couple of Electro Shot boosts can make Snarl hit surprisingly hard on its own. Modest with heavy Special Defense investment keeps it durable enough to stack those Defense boosts safely.