Below is a complete decklist so you can get a closer look
You'll see exactly how this card's graded values have shifted over the past year
This card would fit nicely since most +1/+1 counters commanders have a green pip in their casting cost
However, its secondary effect is where the Information Gain lies: This attack does 30 more damage for each Energy attached to all of your opponents Pokmon. In a meta dominated by high-energy Ancient and Future decks, or the upcoming Mega Rayquaza ex which requires 4-5 Energy to swing, Mega Mewtwo Y ex can easily hit for 360+ damage for a three-energy investment
Using a mechanic called Mutate, you can mutate creatures onto one another in order to build a bigger, and more powerful monster to win games
Playing the Sleep Strategy To use a Sleep deck effectively, follow these strategic principles: Start with Jigglypuff In the early game, deploy Jigglypuff to begin disrupting your opponents board