For example, it can set up a deck of characters that only use the same energy type and energy automatically generates, so theres no need to worry if you have enough energy cards
This attack also does 20 damage to each of your opponents Benched Pokmon (Costs 3 Water and 1 Colorless Energy).Greninja ex SRWaterSuper RareHP: 170Weakness: LightningRetreat Cost: 1 ColorlessAbility: Shifting Stream Once during your turn, you may switch your Active Pokmon with 1 of your Benched Pokmon.Attack: Aqua Edge 100 damage (Costs 2 Water Energy).Mega Gyarados ex SRWaterSuper RareHP: 210Weakness: LightningRetreat Cost: 3 ColorlessAttack: Mega Blaster 140 damage
While I would argue that these sets have been a huge boon in terms of gameplay, they come with a high cost, literally
Some Lesson-focused decks, like the Jeskai Lessons deck, can be incredibly powerful, making them popular options.
With its Blizzard attack, it can deal 80 damage to the opponents Active Pokemon and an additional 10 damage to each of their Benched Pokemon
Thats incorrect