The Yu-Gi-Oh! Trading Card Game Known as the Yu-Gi-Oh! Official Card Game (遊☆戯☆王オフィシャルカードゲーム, Yū-Gi-Ō Ofisharu Kādo Gēmu) in Asia, is a Japanese collectible card game developed and published by Konami. It is based on the fictional game of Duel Monsters created by manga artist Kazuki Takahashi, which is the main plot device during the majority of the manga franchise, Yu-Gi-Oh, and its various anime adaptations and spinoff series.
"Magikey" (魔ま鍵けん Maken) is an archetype introduced in Dawn of Majesty. The Japanese name is a combination of the kanji for demon/magic ("魔") and key ("鍵") which together form a homophone for "Demon Sword" ("魔剣"). The names of the "Magikey" Ritual Monsters and Extra Deck monsters are derived from the devils belonging to "Solomon's 72 Pillars".
Strategy for this deck :
1. You can use effect from "Magnificent Magikey Mafteal" to gain normal summon magikey monster after your synchro summon "Borreload Savage Dragon".
2. If your opponent activate Nibiru from their hand before your summon "Borreload Savage Dragon", you can still synchro summon "Magikey Fiend - Transfurlmine" by use "Magnificent Magikey Mafteal" and level 4 normal monster as synchro material.
Link to use this deck :
https://youtube.com/watch?v=B11fKo3Qgl8