Heliolisk

Next is the only Pokémon on the list that isn’t a Colorless one. Heliolisk is a stage-one lightning-type Pokémon that evolves from Helioptile. Its Quick Attack, which uses two Colorless energy, makes this an attractive inclusion for a deck. It’s a pretty unique attribute. So many evolved Pokémon require at least some energy that matches their type. The attack also does a base 50 damage, with a coin flip potentially adding an extra 40 if you land a heads.
Heliolisk’s biggest problem is its pre-evolution Helioptile. It’s only a basic Pokémon and its Tail Whap attack requires one Lightning energy. If your deck doesn’t have enough Lightning types to necessitate that energy, Helioptile will essentially be worthless for you before it can evolve it.