0243 Raikou

Raikou has got both the best Electric-type fast moves, and the choice can be tough. Volt Switch is usually favored for the more consistent damage output, paired with great energy gains, while Thunder Shock does little damage by itself to double down on the spam of charged moves.

Speaking of those, the choice is easy here: Wild Charge is by far Raikou's best STAB option, and Shadow Ball provides key coverage against things that resist Electric and against the big Ghost-type threats of the upper leagues.

Raikou is a squishy but hard-hitting Pokémon, relying on its ability to fire off devastating Shadow Balls and Wild Charges relatively quickly. While it isn't terrible in a vacuum, it does find itself outclassed by other Electric-types and Anti-Flyings.

It still hits like a truck, but its meta matchups are incredibly poor. Registeel, Giratina (both of them), and Swampert all beat it pretty consistently. Wild Charge 2.0 is strong, but it just doesn't save it. While Shadow Ball is provides valuable coverage, allowing it to beat Cresselia in some shield scenarios, Raikou still loses to Armored Mewtwo.

With uncapped CP, Raikou gets to use its full power, but it's still pretty far behind a lot of the top meta threats. The sheer prevalence of Dragons (and even Groudon) makes Electric damage less relevant than it could be. While you can beat on Pokémon like Kyogre and Togekiss, other Pokémon can fill the same role without the same downsides.