Below are four of the strongest decks you can build in the Base Set only format. The Haymaker mirror match is surprisingly fun and skillful!
Haymaker 

🌠 Iconic Deck 🏆 Top Deck

Pokémon (12) | Trainers (30) | Energy (18) |
4x 3x 2x 2x 1x | 4x 4x 4x 3x 3x 3x 3x 2x 2x 2x | 9x 7x 2x |
The classic Haymaker deck uses Hitmonchan and Electabuzz to put immediate pressure on the opponent. PlusPower allows you to take knockouts more quickly, while Gust of Wind and Energy Removal prevent your opponent from setting up a Pokémon that can overpower you. When your opponent attacks your Weakness or shuts you down with their own Resistance, Scoop Up allows you to easily switch your Active Pokémon and turn the situation around.
Buzzapdos 

😃 Fun to Play

Pokémon (13) | Trainers (36) | Energy (11) |
4x 4x 4x 1x | 4x 4x 4x 4x 3x 3x 3x 3x 2x 2x 1x 1x 1x 1x | 11x |
This hyper-aggressive deck goes all-in with one, sometimes two attacking Zapdos. Electrode’s Buzzap powers up Zapdos’s massive Thunder attack, while Lass follows to strip away your opponent’s Energy Removal & Super Energy Removal cards. In the turns that follow, you’re at the mercy of whatever cards make their way to the top of your opponent’s deck. If you can dodge the Super Energy Removal long enough, you’ll wipe out your opponent’s entire Bench, and win the game!
Tip: Defender can not only be used to protect Zapdos from damaging itself with Thunder, but also on the first turn of the game to help Voltorb survive Hitmonchan’s Jab.
Machamp/Alakazam 


Pokémon (21) | Trainers (23) | Energy (16) |
4x 2x 3x 3x 2x 2x 4x 1x | 4x 3x 3x 3x 2x 2x 2x 2x 1x 1x | 12x 4x |
With 100 HP, Machamp is an almost impossible one-hit KO for most decks. With Alakazam’s Damage Swap, you can move any damage Machamp takes to ensure it remains out of KO range. Four Chansey help to absorb this damage, with Pokémon Center there to erase it all when it starts to overwhelm your board. It takes a lot to get this powerful combo going, but when you pull it off, it’s nearly unbeatable.
Rain Dance 

🌠 Iconic Deck

Pokémon (16) | Trainers (30) | Energy (14) |
4x 1x 3x 4x 3x 1x | 4x 4x 4x 4x 3x 3x 3x 2x 1x 1x 1x | 14x |
The original Rain Dance decks focuses on attacking with Gyarados, using Blastoise’s Rain Dance to provide both the Energy it needs to attack. Meanwhile, your Lightning-weak Blastoise can remain safely on the Bench, waiting for its window to attack.