BPhillipYork: Boros exile and cast from combat is an increasing theme, and a solid one, but this is a weak example of it
This comes as part of a flurry of announcements from The Pokmon Company regarding plans to celebrate 25 years of the series global cultural dominance across games, anime, toys and collectible cards
Sometimes you will just need the Energy from the card as well for another Energy outlet you have, and getting three Energy off of Harnessed Lightning will help
Overall, Amethyst, Ruby, and Steel are more focused on attacking while Amber, Emerald, and Sapphire are more supportive, but each can be used to make interesting combinations and people can experiment with seeing what strategies work with their personal play style