Deck 1: Thunder Deck Featuring Painful Escape 2 Sanga of the Thunder 1 Thunderclap Skywolf 3 The Ascended of Thunder 2 Gem-Knight Tourmaline 1 Gem-Knight Lazuli 3 Thunderclap Monk 1 Wattpheasant 3 Wattcobra 3 Honest 1 Wattgiraffe 1 Brilliant Fusion 3 Photon Sanctuary 1 Gem-Knight Fusion 2 Wattrain 1 Harpies Feather Duster 1 Monster Reborn 3 Painful Escape 3 Back to the Front 3 Trap Trick 2 Reusable Jar 3 Some Summer Summoner 2 Hip Hoshiningen 1 Gem-Knight Phantom Quartz 1 Gem-Knight Seraphinite 1 Gem-Knight Prismaura 1 Number 39: Utopia 1 Number S39: Utopia the Lightning 1 Castel, the Skyblaster Musketeer 1 Dark Rebellion Xyz Dragon 1 Constellar Omega 1 Constellar Ptolemy M7 1 Number 11: Big Eye Deck 2: Gem-Knight Deck Featuring Thunder Hand 3 Gem-Knight Tourmaline 3 Thunder Hand 3 Gem-Knight Amber 3 Gem-Knight Obsidian 3 Gem-Knight Lazuli 3 Gem-Armadillo 1 Nemeses Keystone 1 Eldlich the Golden Lord 1 Crystal Rose 1 Block Dragon 1 Brilliant Fusion 1 Gem-Knight Fusion 3 Absorb Fusion 3 Thunder Dragon Fusion 3 Gemini Spark 3 Supervise 3 Gemini Ablation 1 Brilliant Spark 2 Gem-Knight Phantom Quartz 1 Brute Enforcerer 1 Union Carrier 1 Knightmare Cerberus 1 Predaplant Verte Anaconda 1 Draco Masters of the Tenyi 1 Gallant Granite 1 Thunder Dragon Colossus 1 Gem-Knight Zirconia 1 Gem-Knight Seraphinite 2 Gem-Knight Prismaura 1 Gem-Knight Master Diamond 1 Gem-Knight Lady Brilliant Diamond Deck 3: Beast Deck Featuring Thunder Unicorn 3 Valerifawn, Mystical Beast of the Forest 1 Yokotuner 1 The Fabled Cerburrel 3 Uniflora, Mystical Beast of the Forest 2 Kalantosa, Mystical Beast of the Forest 2 Peropero Cerperus 3 The Fabled Ganashia 3 Rescue Cat 3 Danger

These aren't required for play
They've been used in lots of sets so far, and from the looks of it well be seeing more in the future
It blocks and races well against any deck playing small creatures, and it survives most of the cheap burn spells in the format while also being able to trade up for bigger green creatures
You get the ETB trigger twice for four mana
As long as youre building around the type, it makes sense to include this energy, which boosts damage by 20