@ungulateman: You must catch the first Shinx you come across.
Oh no, your Shinx is suffering from a limp leg! Must be some kind of birth defect or something, poor little guy. The power of its moves when totaled together must never exceed 100. Furthermore, to evolve Shinxe you must solo a gym leader. This helps the tyke regain some strength upon evolution, and the total power limit is increased to 150. Once more, you must solo a gym leader to evolve. Just look at that, your Shinx has overcome its previous injury and turned into quite the sporty teammate! Power limit is maxed out at 200. Be careful, though; it still has signs of its previous handicap. Any time your Luxray is feinted in battle, your power limit is decreased by 10. This stacks for every knockout, up until 12:00 AM on Sunday where the value is returned back to 200. Naturally, this goes for every week until you beat the elite four, at which point Luxray is fully strengthened and has no power limit for its moves! On note of that, if you are knocked out enough that your moves exceed your power limit, you must chose a move to ban for the entire week until the limit is reset on Sunday.
Not too hard, but complicated. Have fun with this one!