“Scrap” is an archetype of EARTH monsters whose effects primarily focus on destroying one another, setting up the Graveyard and triggering various effects. Thanks to Scrap Factory, their Field Spell, whenever a “Scrap” monster is destroyed by a card effect, you can Special Summon another one directly from your Deck, making up for one of their main drawbacks.
The main goal of this deck is to Summon Scrap Twin Dragon, a Level 9 Synchro Monster with the ability to return cards your opponent controls to their hand.
When Scrap Chimera is Normal Summoned, you can Special Summon a "Scrap" Tuner monster from your Graveyard. Special Summon Scrap Goblin, Beast or Orthros via this effect, change their Level to 5 with Level Duplication and Synchro Summon Scrap Twin Dragon. If Scrap Orthros was not Special Summoned properly, you will not be able to target it with Scrap Chimera (or Scrap Golem)’s effect.
Once per turn, Scrap Golem allows you to Special Summon a Level 4 or lower “Scrap” monster from your Graveyard to either side of the field. This effect does have synergy with Scrap Searcher since, when it's Special Summoned, it destroys all non-“Scrap” monsters on the field, but most of the times you are just going to use it to Special Summon Scrap Beast or Scrap Orthros to your side of the field to Synchro Summon Scrap Twin Dragon.
Scrap Orthros is a Level 4 Tuner that can only be Special Summoned from your hand when you control a “Scrap” monster. If you Special Summon Scrap Orthros via its own effect, you have to destroy a “Scrap” monster you control. You want to Special Summon Scrap Orthros while Scrap Factory is active, so you will be able to Special Summon Scrap Golem from your Deck and Synchro Summon Scrap Twin Dragon.
If Scrap Orthros is destroyed by the effect of a “Scrap” card, including itself, it allows you to add a “Scrap” monster with a different name from your Graveyard to your hand. Target Scrap Orthros with its own effect, chain Scrapstorm to it and send a “Scrap” monster you want to add to your hand to the Graveyard. Scrap Orthros will be destroyed after the monster has been sent to the Graveyard, so you will get to add it to your hand.
Scrapstorm allows you to target a “Scrap” monster you control, send a “Scrap” monster from your Deck to the Graveyard, draw a card and then destroy the monster you targeted. Since it’s a Quick-Play Spell, you can activate Scrapstorm when a “Scrap” monster you control is going to be destroyed by its own effect or by the effect of another card to get value out of it.
You can activate multiple copies Scrapstorm at once by targeting the same monster, you will still get their effects off, even if the monster has already left the field because the first card that resolved completely has destroyed it.
Once per turn, by destroying a card you control, Scrap Twin Dragon allows you to return two cards your opponent controls to their hand. If you destroy a “Scrap” monster while Scrap Factory is face-up on your side of the field, you will immediately get to Special Summon another “Scrap” monster from your Deck, which will make it extremely easy to OTK your opponent. If you don’t control any other card, you can destroy Scrap Twin Dragon to activate its effect.
If Scrap Twin Dragon is destroyed by your opponent, you get to Special Summon a non-Synchro “Scrap” monster from your Graveyard. If you used Scrap Golem and Scrap Beast
Atomic Scrap Dragon is a Level 10 Synchro that requires a “Scrap” Tuner and two or more non-Tuner monsters in order to be Special Summoned, it takes a lot its resources and the card doesn't bring exactly that much to the table.
Atomic Scrap Dragon has 3200 ATK, which is great because it allows him to get over an Ancient Gear Reactor Dragon under Scrap Factory, and, if it's destroyed by battle or by a card effect, it allows you Special Summon a “Scrap” monster from the Graveyard.
Once per turn, Atomic Scrap Dragon can select a monster you control and up to three cards in the opponent's Graveyard, destroy the monster and then shuffle the opponent's cards back into the deck. Shuffle back into the Deck Sacred Phoenix of Nephthys or Cerulean Sacred Phoenix of Nephthys to prevent your opponent from Summoning them.
This Skill gives you a lot more flexibility when it comes to Synchro Summoning, the only issue is that you can only activate it once per Duel. Normal Summon Chimera, Special Summon Beast or Orthros and then change the Level of one of your monsters to 5 using Scrap Golem to Synchro Summon Scrap Twin Dragon.