Poor man's Maliss
You may have been aware to the fact that Pure Thunder Dragon is a bricky weird-combo deck. I took the challenge to make it functional, or at least floodgate your opponent so much to win through.
1) Cards are organized in the order of importance (i.e. Dragondark being the best starter among monsters, Sarc and Allure being the best Spell Staples).
2) The best Pure T.D. approach is really the "I summon Colossus and pass my turn". The whole strategies are all floodgating to death, with some towers.
3) Side Deck: if you're going first, put Forced Requisition; when going second, 3 Acqua Chorus Round in the main deck for start and follow-up. The Pots are used to send away Extra Deck's fat for consistency. Monster Reborn Reborn makes sense in long game where you can have lots of Thunder Dragons in graveyard.
4) The lack of monsters in a Pure approach makes you having to run more copies of not-good monsters and having to run a 40-card deck. The extra deck here only has what the archetype need, you can add whatever you like with the remaining slots.