Nah this deck isn’t good. Emerald and sardonyx are useless most of the time outside of being 1800 beatsticks. And prismatic fusion is pretty hard to get off because there’s a lot of fast decks and strong backrow
And Gem-Knights has existed LONG before Arc-V existed
In fact, Constellar, Gem-Knight, and X-Saber are already considered old archetypes at the time they show up in Arc-V. Especially X-Saber, it's a freakin' 5Ds era archetype
You know, it's weird to think about, but even Constellars have been an archetype much longer than Blue-Eyes has, lol. (Blue-Eyes only actually became an archetype at the end of 2015 with the release of Priestess with Eyes of Blue.)