Junk Doppel A " Junk Doppel " Deck is named after its main 2 components , " Junk Synchron " and " Doppelwarrior " . This build uses Junk ' s revival abilites and the Doppel Token s generated by Doppelwarrior to perform long chains of Synchro Summon s . Playing Style . Due to " Doppelwarrior " being able to be Special Summoned whenever " Junk Synchron " uses its effect , and itself being a " Junk Synchron " target , the main goal during early game of this build is to get something to revive via Junk in your Graveyard . Due to this , cards like " Card Trooper " and " Ryko , Lightsworn Hunter " are commonly used to " fuel " the Graveyard with the appropriate cards . Once you get something to revive , the basic idea is to Normal Summon " Junk Synchron " , then Special Summon a monster and Special Summon " Doppelwarrior " afterwards . From there , you perform several Synchro Summons , using the materials you ' ve gathered and the Doppel Tokens created by Synchro Summoning . There ' s a certain combo that the Deck always aims to achieve : After that , you can either keep Synchro Summoning using the remaining monsters and / or the cards you drew with Hyper Librarian , or " scale " into higher Level Synchros like " Black Rose Dragon " or " Scrap Dragon " . It ' s important to note that keeping Librarian on the field lets you perform very long chains of Synchro Summons due to all the cards you end up drawing . Due to " Formula Synchron " being limited " T . G . Recipro Dragonfly " acts as a pseudo - substitute of Formula , allowing you to draw an extra card when Librarian is out and allowing different combinations to Synchro Summon . It ' s worthy to note that , due to the ease of Synchro Summoning Level 2 to 6 Synchro Summons , this build excels at Summoning Delta Accel Synchro monsters , like " T . G . Halberd Cannon " or " Shooting Quasar Dragon " . Also , " Junk Synchron " has access to its own repertoire of exclusive Synchro Monsters like " Junk Destroyer " . Because " Spore " and " Glow - Up Bulb " are some of the best Level 1 Tuners available , the " Junk Doppel " build is usually seen alongside the " Plant Engine " , using " Lonefire Blossom " to Summon " Dandylion " or any of the mentioned Tuners . Due to " Card Trooper " being pretty common in the build , the presence of the " Plant Engine " and the fact that several " Junk Synchron " targets are valid for him as well , " Debris Dragon " is usually seen on the Deck too . " Effect Veiler " is also a common sight , both for its status as a Level 1 Tuner and its ability to provide effect negation . Since they provide easy materials to work with , " Reborn Tengu " , " Blackwing - Zephyros the Elite " and " Tour Guide From the Underworld " aren ' t uncommon on these builds either . Due to his Synchron status , " Junk Synchron " is a valid target for " Tuning " , which allows other Tuners like " Unknown Synchron " and " Quickdraw Synchron " to be played in the Deck as well . An advantage of using Quickdraw is the line of Synchro Monsters it allows you to play , with " Drill Warrior " ( and its recycling ability ) and " Road Warrior " ( and its ability to Summon " Doppelwarrior " from the Deck ) being the highlights . Since one of the preferred ways to fill the Graveyard is the use of Lightsworn monsters , the build can also use Chaos monsters pretty easily . " Chaos Sorcerer " is particularly useful thanks to its Level and Type , which allows for more Synchro Summons and grants access to the powerful " Arcanite Magician " . " Black Luster Soldier - Envoy of the Beginning " is also very useful as it can be recycled with " The Warrior Returning Alive " , which can also be used to grab " Junk Synchron " and " Doppelwarrior " for another use . Due to the usually high number of DARK monsters , " Dark Armed Dragon " is also a viable option . While overlooked , " Junk Forward " is a pretty good card to play in this deck . This card , if used in conjunction with " Quickdraw Synchron " and " Level Eater " , can bring out either a " Road Warrior " , a " Chevalier De Fleur " , or a " Junk Destroyer " without using your Normal Summon / Set for that turn . This can open up an opporturnity for " Junk Synchron " , " Synchron Explorer " , and " Debris Dragon " , and the path the player takes next depends on the Synchro Monster that was first summoned out . " Dark Simorgh " is a great card in a Junk Doppel build since it is likely to have both DARK monsters and WIND monsters . While " Junk Synchron " , " Unknown Synchron " , " Doppelwarrior " , and " Level Eater " are examples of a few DARK targets , a player can consider WIND targets such as " Debris Dragon " , " Spore " , " Turbo Synchron " , and " Speed Warrior " . Having " Dark Simorgh " on the field wil prevent your opponent from setting cards such as " Mirror Force " or " Dimensional Prison " to stop your plays . While Spells and Traps aren ' t really that special , it ' s important to note that the Deck runs few of them , and most of them are either really " basic " cards ( like " Torrential Tribute " ) or revival cards ( like " Call of the Haunted " ) to " force " Doppel ' s Special Summon effect . T . G . Junk Doppel . The T . G . monsters are particularly useful with the " Junk Doppel " strategy , particularly " T . G . Cyber Magician " , " T . G . Warwolf " and " T . G . Striker " . Cyber Magician and Striker are both " Junk Synchron " targets , with Cyber Magician being another useful Level 1 Tuner and Striker having a Special Summon ability which can help to make the Synchro chains longer . Warwolf can be Special Summoned basically with every move this Deck does , allowing to have more flexibility on levels . Warwolf also allows the use of " T . G . Wonder Magician " and " T . G . Power Gladiator " , with Wonder Magician being especially important as it can destroy troublesome cards and doubling as another " Synchro Tuner " besides " Formula Synchron " , making the Summon of cards like " Shooting Quasar Dragon " easier . Another added benefit of the T . G . engine is that they search themselves , providing you with a solid source of monsters while you draw the appropriate cards to begin a Synchro Summon chain . It ' s worthy to note that Warwolf is DARK and Cyber Magician is LIGHT , fueling the Chaos monsters too . Weaknesses . The major weakness of this build is its complete reliance on the Graveyard : without good mills or access to it , the Deck comes to a grinding halt . Because of this , Decks using the Banish mechanic with cards like " Dimensional Fissure " and Gravekeepers are some of this build ' s most feared matchups . Likewise , including cards in your Side Deck to disrupt the Graveyard like " Kycoo the Ghost Destroyer " and " D . D . Crow " should ruin Junk Doppel ' s plans . Another weakness is the reliance on Monster effects . Due to this , effect negation like " Effect Veiler " or " Divine Wrath " usually spells trouble for the build . Indirectly , the need to use so many monster effects ( and the need to send cards to the Graveyard ) makes the Deck more monster - heavy than usual ( around 23 monsters most of the time ) , so limiting their ability to Summon is a very good idea . " Summon Limit " and " Thunder King Rai - Oh " are good cards to use against this Deck . Alternatively , " Maxx " C " allows you to stop them in their tracks , making them choose between leaving their weak monsters on the field so you stop drawing cards ( and essentially losing a turn ) or hoping that you don ' t draw anything that can stop them . Since most of their monsters don ' t share a lot of properties , " Rivalry of Warlords " and " Gozen Match " are very useful at disrupting this build ' s combos . Just be careful against " Junk Synchron " and " Doppelwarrior " , since they share the same Type / Attribute and can Summon cards that also share their Type / Attribute .