Breaking the Law
The only card on the banlist with the potential to win an entire match on it's own.
Victory Dragon
Yo! I got banned from events, and here's how it went down. I did nothing wrong, man! I did nothing wrong whatsoever! I got banned! I didn't even KNOW I got banned! I didn't get no email, I didn't get no explanation, I didn't get no chance to explain myself. I just got banned. I got a message from Doug Zeeff, that I got banned from Konami. Konami doesn't even message me and tell me I'm banned. So I got banned from my old video I made, Where I jokingly made a video- I jokingly, JOKINGLY, told, the world, that, I stalled for time. I DIDN'T STALL FOR TIME! Anyone with a BRAIN, would realize it was a JOKE! It was a joke, that was- it was a good joke at the time! The new time rules were going on, "Oh, Ha Ha Cowboy for Game". It's a JOKE! It's just like Firewall Pass. It's a JOKE!
Gagaga Cowboy
An staple of old formats such as GOAT and Reaper, this machine monster allowed you to draw up to four cards, assuming you had his normal monster "brother" on the board.
Dekoichi the Battlechanted Locomotive
Tellarknight
Stellarnova alpha
This monster, after having his skills, soul, and mind drained from him, finally defeated the Dark King of the Abyss for control over the underworld.
Dark Ruler Ha Des
This card serves as a powerful floodgate, however, you must make sure to protect the other cards on your field and in your deck to keep it alive.
Vanity's Emptiness (1 OCG, 0 TCG)
Arguably the most mass-printed illegal card, this trap card allowed you to draw 5 cards!
Card of Last Will
This monster is one of six XYZ monsters to have the ability to roll a die.
Number 86: Crazy Box
Banned in remote duels (and arguably should in real duels), this card allowed you to virtually stack your opponent's top card with a worthless one, due to the nature of players having different card sleeves.
Parasite Paracide
Tachyon Transmigration
Galaxy-Eyes / Galaxy
Years ago, scientists designed and constructed this machine. However, something went wrong, causing it to destroy the world and turn it into a post-apocalyptic one, at least that's what distant memory serves.
Mekk-Knight Morning Star
Played in Danger Dark World FTK lists, this card with proper graveyard set up could net you 3 cards on activation. It wasn't even a once per turn!
The Beginning of the End (1 OCG, 3 TCG)
Given out at the 2007 World Championship, this card acted as not only an attack modifier, but as a certain character's catch phrase.
Get Your Game On!
These 2 monsters are the only rank 4 monsters without effects.
Gagagigo the Risen AND Gem-Knight Pearl
Played in a very questionable list of D.D. Warrior Toolbox in 2006 by Kirk Leonhardt, this card allowed for free life points without the negative downside, assuming you had the set up.
The Immortal of Thunder
Mecha Phantom Beast
Do a Barrel Roll
The tribes of the world waged war against each other for land and territory, until this archetype threatened the existence of the world.
Worms
A card used most famously in a very specific variant of Monarchs, this card allowed you to make use of Monarch's intense draw engine to FTK the opponent.
Magical Explosion (1 TCG, 0 OCG)
These special kinds of cards can be earned at side events at major events, such as YCS-s and Extravaganzas.
Giant Cards
Used by Thomas Rose at YCS Dusseldorf, this dark monster allowed him to win in time going second in the Main Phase.
Number 50: Black Ship of Corn
The only Tribute-Summonable Flip monster in LOB, this card had a unique way of dealing with backrow.
Reaper of the Cards
Saber Hole
After being driven mad, Gogiga Gagagigo was purified by this monster after being reminded of his oath of companionship.
Marauding Captain
A key part in numerous FTKs, this monster is able to be cheated out in a various number of ways, most commonly through Cyber-Stein and Fusion Gate.
Blaze Fenix, the Burning Bombardment Bird (1 OCG, 3 TCG)
These 3 cards were given out as Jump promotional, set cover, and video game promotional material and saw extensive use in the anime.
Obelisk the Tormentor, Slifer the Sky Dragon, and The Winged Dragon of Ra
Alchemic Magician
This card, due to the archetype it being designed for being poorly localized, has the most clauses for cards it cannot search.
Arsenal Summoner
Frightfur
Frightfur March
In order to avoid releasing all 3 Dragons of the Ice Barrier during the war, Noellia and Natalia attempt to summon and enslave this archetype, however, the ritual failed, causing Natalia to die and Noellia to turn evil.
Famous for getting Symbol of Heritage limited in the TCG, this monster was the easiest way of fulfilling the equip spell's requirements.
Lonefire Blossom (2 OCG, 3 TCG)