Thunder dragon deck is one of the best deck in current format. Its pure version is specialized in fusion summoning while spewing out some generic link monster. This deck will take the pure version with different approach while maintaining the real deck consistency. While MR5 format boosts this deck playstyle, the new banlist hurts this deck consistency, so I have to put this in non-meta category.
For starter we need to get chain material (the most important, lets u fusion summon using main deck as material) and necro fusion (generic fusion trap). Chain material bypasses the "..banish the material from gy face down.." on necro fusion, so any material will be monster from main deck, hand, and/or gy banished face-up. It means any thunder dragon banished effect (3 monster effects if u fusion titan) will trigger during ur opponent's turn, maximizing the card advantage for thunder dragon. To do this, cards like lilith (searches both chain material and necro fusion) and trap trick (searches both, but shouldnt be used to search chain material cus it limits u to only use one trap after trap trick resolved).
The remaining main deck cards are just basic thunder dragon package cards (including aloof lupine, batteryman solar, allure of darkness, and gold sarc). Support cards like impermanence (handtrap, another trap trick target) and ash blossom (handtrap) are great to boost this deck.
Extra deck: thunder dragons, clotheep (gives free below lv4 monster after u ss fusion monster), predap anaconda (lets u use thunder dragon fusion from deck while dumping the card to gy), and linkuriboh (opens up extra zone using thunder dragonmatrix) are essential. The rest are just good generic link monster.