So I know a few things. One, Thunder Dragons don’t use the normal summon whatsoever so that leaves it open for things like Gem-Knights who absolutely need their normal summon. Two, Gem-Knights have some thunder monsters and sometimes ask for a thunder monster, like a Thunder Dragon, as a fusion material. Three, both Gem-Knights and Thunder Dragon are fusion decks.
So I combined them... and made this! This is my first time working with this duo archetype so constructive criticism is helpful!