Basic Energy Cards have no description at the bottom of the picture and they can only provide 1 energy to the attached Pokmon
In general, when looking at power level, I considered the overall game plan, the synergy of the 99 with that game plan, things like interaction, ramp, mana base and card draw, the commander, and the power of the remaining stand-alone cards
If you really want to go all out here you could pick up all 3 for a nice display
Thematically this deck rebuilds its large ensemble of characters in the World of Ruin, so the deck theme really plays into that section of the story
I am always happy when I find a convincing way to give a typically off colour effect like card quality to a colour in a flavourful way
Oona, Queen of the Fae Oona, Queen of the Fae is a large flier that can produce more faerie tokens, mill your opponents, and even be an alternative win condition if you have ways to generate infinite mana