When it's your turn, an Energy will be generated in your Energy Zone
That's a lot of cards, especially in a format like Commander where you begin with 40 life and the four life-loss is paltry
You may play a Basic Pokemon by putting it into your Bench zone, evolve a Pokemon, attach an energy card to a Pokemon, play a trainer card, retreat your Active Pokemon, and use your Pokemons abilities
Then all creatures without Shadow get -1/-0, and all creatures with Shadow get +1/+0
Its a celebration of the game and the victory that saved the realm from the clutches of Ursula
Finally, the older a Constructed format, the smaller the creature count tends to be (use tournament results from the era of your choice for specifics)