Dragon Link
Because of this card, Dragon Link plays One for One. It gets you a Link 1 AND a powerful extender just off a Normal Summon, and it's not even once per turn!
What is Black Metal Dragon?
This card destroys all Attack Position monsters your opponent controls.
What is Mirror Force?
This card remains to this day the third most popular card in Duel Links, despite seeing next to no play in Master Duel. No point in discarding to destroy a Trap if no one ever sets any Traps, I guess.
What is Knightmare Phoenix?
This monster has cards to Special Summon itself from hand, Deck and GY, but no other Main Deck monsters in-archetype. That might be why it is usually paired with so many floodgates.
What is Eldlich the Golden Lord?
This card requires a high cost of 2000 LP, but its effect can be game-winning, in particular if your deck contains both Red-Eyes Black Dragon and Dark Magician.
What is Predaplant Verte Anaconda?
Dragon Link is a pile, and that includes a pile of Field Spells. They play Boot Sector Launch, Dragon Ravine, and this card, which allows them to easily search powerful extenders like Chaos Dragon Levianeer.
What is Chaos Space?
This card destroys a monster that declares an attack.
What is Sakuretsu Armor?
What is Abyss Dweller?
This monster is a staple of EARTH Machine decks for its ability to destroy all monsters the opponent controls on their turn, as long as you have a powerful enough monster on your own field to target.
What is Machina Citadel?
You will quickly exhaust your resources unless you dig up this treasure from your deck, whose mere presence in your hand allows you to avoid any LP costs for all of the cards in its archetype.
What is Millennium Ankh?
These two monsters come as a package deal, allowing the Dragon Link player to easily set up multiple Link Summons while also setting up the GY with good banish targets. Not surprising that they get limited and banned together too.
What are White Dragon Wyverbuster and Black Dragon Collapserpent?
This card banishes a monster that declares an attack.
What is Dimensional Prison?
Arguably one of the most successful Special Set cards Konami has ever released, this card sees play in plenty of decks, and not just decks that can search it with a skill. As long as you don't have a Limit 1 or a skill that locks you out of Fusion Summoning, this card may improve your win rate.
What is Super Polymerization?
This monster is used in an infinite loop alongside Makyura the Destructor, Chain Material, and Fusion Gate to create a continuous cycle of summoning and recycling itself.
What is Elemental HERO Electrum?
Though its own effect to pay LP is rarely used, it sees a ton of play in all sorts of decks that require heavy LP costs, and is a one card wall AND finisher.
What is Psychic End Punisher?
Trap Cards tend to be ignored in modern Yu-Gi-Oh, but this particular Trap has seen some play in recent Dragon Link decks, as a searchable way to add an additional omni negate to your end board.
What is Max Metalmorph?
This card shuffles any monster into the Deck when a monster either player controls declares an attack.
What is Jelly Cannon?
This powerful staple features multiple benefits to offset its horrific costs: your opponent cannot react to it, it doesn't target, and it can negate multiple monsters. Still, it is a bit shocking that a card that can require you to go up to -4 would see play in a game with a reduced hand size.
What is Forbidden Droplet?
This monster's ability to negate Spells and Traps is not once per turn, making it incredibly difficult to play around. It's balanced around the fact that you need to use two Synchro Monsters as Fusion Material to make it, but Waking the Dragon doesn't care about that.
What is Naturia Exterio?
For just 1000 LP, you too can shut off the effects of every monster on the field, with this card!
What is Skill Drain?
Dragon Link is one of the best ways to play Bystials as a full Control Deck rather than just a few pieces of disruption. In particular, it is because of their access to this card, which allows them to search The Bystial Lubellion at the cost of one or two cards from their hand or field.
What is Starliege Seyfert?
This card increases your Life Points by the Attack Points of a monster that attacks you, and nothing else.
What is Enchanted Javelin?
One of Duel Links' longest lasting and most consistent staples, it stubbornly dodged the banlist for years until it was finally power crept by its AOE retrain, but its ease of use and numerous printings have left it a go-to for many players in more casual lists even today.
What is Book of Moon?
You can't cheat this monster out, but you don't have to actually summon either of its materials if you get lucky enough to draw them both along with a Fusion Spell. It has an omni negate and the ability to float into both of its absurdly difficult to summon Fusion Materials, making it a powerful boss monster for a terrible deck.
What is Imperion Magnum the Superconductive Battlebot?
This monster CAN technically be used to return a Spell or Trap to the hand, but the main reason it sees play is to allow the monster it uses as material to dodge Effect Veiler and Infinite Impermanence.
What is Masked HERO Blast?