Rise of the Floodborn will explore what happened when a flood of magical ink mixed up the six different card-type colors (Amber, Amethyst, Emerald, Ruby, Sapphire, Steel) and transformed various Disney characters in unexpected ways
Quandrix students use maths to cast magic, and their spells are green and blue
Norman Osborn / Green Goblin Norman Osborn is a solid early conniving villain and Green Goblin is a great cost reducer and sower of mayhem, as in card advantage
The biggest concern with playing monocolor decks around a niche mechanic like energy is the limited pool of cards available, but Nissa really patches any holes on both sides of your gameplan
Wugtrio EX is essentially the Water version of Dragonite, but it is more energy efficient