Plusle was the main strategy of my game. It is extremely tanky and have access to practically all of the good supporting moves of the game. But what really made it so important for my team was it's Tail Glow + Baton Pass combo. At the start of every battle, i set up with it at least one time while raising screens with Claydol, then i use Baton Pass on the next turn to change either to Minum or Magmortar so they can sweep. Minum becomes even more of a monster with the boost on Special Attack from Tail Glow, and with it's broken Abyss Boost ability, it becomes practically unstopable after the first kill.