If I were to give you direct advice on what to do next, I would recommend the following: 1) restrict your access to Pokemon content to two hours per day, 2) only access Pokemon content if you have completed your homework and other responsibilities, 3) seek employment before spending any money on cards or packs, and most importantly, 4) work toward building friendships and experiences this year - put yourself out there and try new things
Its just another name for a Leyline of Abundance Mono-Green Devotion, where Elvish Clancaller is both the actual Elves payoff and a solid Nykthos, Shrine to Nyx enabler
From there Zada uses anthems and rituals to assemble a lot of mana
Since both monsters are Synchro Monsters in real life, they would have to allow summons from the Extra Deck to replicate those moves from the manga
The Basics: Theme Decks If you're new to the Pokemon TCG, theme decks are a great place to start