Selling and buying are part of the game for most players, so knowing when to buy new cards and sets and when to sell your old cards is crucial
Sometimes Basic Pokmon will have good attacks and abilities without evolving
It was mostly normal monsters, some overpowered effect monsters (and others that aren't so useful), basic spells and trap cards
Like, for example, damage from Whiscash RCL 100 that does 140 damage to your opponent's Active Pokmon and 20 damage to the Benched Pokmon, Donphan VIV 87 that does 120 damage to the Active Pokmon opponent's, but it does 20 damage to all your Benched Pokmon
You can then also spend either black and tap it to either exile an instant or sorcery to make your opponents lose two life, or green and tap it to exile a creature card from a graveyard to gain two life
Let's look at some counters