Orcust Fiendsmith

The Fiendsmith engine makes this deck more resistant to cards that prevent banishing, such as Artifact Lancea, Imperial Iron Wall, and Chaos Hunter. Any two effect monsters can summon Moon of the Closed Heaven, who can access the Fiendsmith engine through Fiendsmith's Requiem because she's a light fiend.

The Orcust-Fiendsmith Connection

Girsu, the Orcust Mekk-Knight can be a one-card starter for the Fiendsmith engine because he summons an Orcust token, which can be used as link material for the effect monster Galatea-i, the Orcust Automaton. Galatea-i can then discard a card to search World Legacy - "World Crown", which can special summon itself to a zone Galatea-i points to. World Crown + Galatea-i = Moon of the Closed Heaven. Also, Orcust Harp Horror, Orcust Cymbal Skeleton, Orcust Knightmare, and World Legacy - "World Wand" have graveyard effects that will lock you into only special summoning dark monsters for the rest of the turn, so make sure you use the Fiendsmith engine first before activating their effects.