Nuclear
Played in Dual Avatar, this card was enabled due to their ability to easily and instantly summon 5 normal monsters.
The Law of the Normal
Egyptian Gods
Mound of the Bound Creator
Called "The Next Trap Dustshoot", this card recieved massive hype from specifically Cimoooooooo. However, due to a certain ruling release and change, this card's hype immediately crashed.
Appointer of the Red Lotus
Given out as a remote duel sweepstakes prize, this card would remain on the limited list for years as an OTK-enabler.
United We Stand
Yang Zing
Nine Pillars of the Yang Zing
Blue-Eyes Chaos Dragon
Paladin of White Dragon
Destroyer with Eyes of Blue
Destroyer with Eyes of Blue
Played in GX, when Jaden had his 4 vanilla elemental heroes together on the field, he was able to activate this card.
Elemental Burst
Dark Magician
Magician's Salvation
This card is popular in edison format for both its powerful hand ripping potential along with its tuner subtype, making it a great rescue cat target.
X-Saber Airbellum
Played in Library FTK, this card allowed you to deal the necessary burn damage after resolving the show's title: Reversal Quiz.
Fuhma Shuriken OR Black Pendant
Eldlich
Golden Land Forever!
Gearfried the Red-Eyes Iron Knight
Neo Ultimate Red-Eyes Black Dragon
Return of the Red-Eyes
Neo Ultimate Red-Eyes Black Dragon
This isle of fruit and trees is the final resting place of legend. However, be sure your graveyard is properly set up before embarking here.
Noble Knights
Noble Knights of the Round Table
Seeing a random buyout relatively recently and being played in "Ritual Goodstuff", this monster would see play for either its recovery options in drawing cards or adding back from the graveyard, but also for it's handlooping effect.
Saffira, Queen of Dragons
This gladiators assault equip spell saw one of the silliest and most expensive buy outs due to its single high-rarity printing and extremely scarce nature.
Magic Formula
Morphtronic
Morphtronic Forcefield
Shark Megalodon
Cyber Shark
Sharkraken
Shark Megalodon
(Hyper-Ancient Shark Megalodon)
This is the ONLY eldlich card to have never seen serious competitive success in a decklist.
El Dorado Adelantado
Qli
Laser Qlip
Relased 7 years too late to be used alongside it's fellow PACMAN friends, this monster's flip effect is to loop your opponent for 1.
Swarm of Crows
This Guardian card is also treated as a Noble Arms card. Why? Who cares?
Celestial Sword - Eatos
Karakuri
Karakuri Cash Shed
Salamangreat Wolf
Salamangreat Racoon
Salamangreat Coyote
Played in fire king, this 5D's monster belonging to an archetype of terrible tribute bosses was played due to its board wipe effect when popped from any location.
Earthbound Immortal Ccarayhua
Zoodiac
Zodiac Sign
Played in early Speed Duel formats, these two monsters, one of which was a union, could combine to form a monster that was capable of looping your opponent upon either battle of monster or direct lifepoints.
Decayed Commander OR Zombie Tiger
if you don't count A Legendary Ocean's errata, this remains the only card in the game with the word "Downgrade".
Demotion
Gemini
Gemini Counter
Performapal Drummerilla
Performapal Backflipparakeet
Performapal Corn
Performapal Backflipparakeet