With all these different card options, strategies, and deck options, your opponents will probably be keeping those Goyfs in the trade binder for a while
It also offers a good defensive body that such a deck might need while you get ready to go off
The Un- sets often have some cards that either take a joke too far, or which feel more like Limited-only chaff that doesnt really play well outside of Limited play
Like most Pokmon cards, the value of Mewtwo depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Legends Awakened)
Normally, you are restricted to attaching one energy card to a Pokmon each turn
Are your rankings similar to mine or way different