RTFC
If this card is sent to the GY as Synchro Material: You can add 1 "Junk" monster from your Deck to your hand.
Jet Synchron
Despite part of an underwhelming Hidden Arsenal archetype, this card saw play in Edison Format due to its high ATK and ability to set up a level 8 synchro after winning a battle.
Flamvell Firedog
Judgment Dragon
Have 4 or more "Lightsworn" monsters with different names in your GY.
One of the most well-known abusers of spell counters, this monster features most prominently in Exodia strategies
Banned in the ocg, but not the TCG, this card powered the Wind-up loop
Wind-up Hunter
This monster rules over the capital city Kauwloon. Those who violate the rules are, shall we say, banished
Virtual World Kyubey - Shenshen
During your End Phase: Destroy all other monsters you control that did not declare an attack this turn. This card must be face-up on the field to activate and to resolve this effect.
Red Dragon Archfiend
This GX-era card is best known for its role in Dino Rabbit, as a way to set up Evolzar Laggia or Dolkka.
Hydrogeddon
Raviel, Lord of Phantasms - Shimmering Sraper
Tribute 3 monsters
This Synchro monster is prominent in old 5ds formats for its ability to remove any 2 cards from your opponent's field.
Arcanite Magician
This trap card was limited for a long time, but was eventually banned after players realized how powerful the card was going first.
Trap Dustshoot
Constellar Sombre and Evilswarm Kerykeion team up to defeat this literal god.
Sophia, Goddess of Rebirth
You can banish this card and 1 or more face-up non-Tuners you control, then target 1 "Blackwing" Synchro Monster in your Graveyard whose Level equals the total Levels the banished monsters had on the field; Special Summon it, and if you do, it is treated as a Tuner.
Blackwing - Gofu the Vague Shadow
For some reason, while the anime referred to effects as "special abilities," this card had a "super power."
Elemental HERO Flame Wingman
Malefic Cyber End Dragon
Banish 1 "Cyber End Dragon" from your Extra Deck.
This DARK Spellcaster summons Dark Magician from hand, Deck, or GY.
Skilled Dark Magician
This card is supposed to be related to the mecha phantom beasts, but not by name.
Phantom Fortress Enterblathnir
"Driven by ambitious desires to reign over both the land and sea of their region, this archetype began an invasion on the island of their archenemies, the Fire Kings."
Atlantean
When this card is destroyed and sent to the Graveyard: Target 1 monster in your Graveyard (if possible); destroy all cards you control, also Special Summon that monster (if any).
Light & Darkness Dragon
This is the strongest Pyro in the game, tied with Subterror Behemoth Ultramafus
Volcanic Doomfire
Archnemeses Protos
Banishing 3 monsters with different attributes from your GY andor face-up field.
Best known for its role alongside Set Rotation, this card can hold Spell Counters, one of the few field spells with this ability
Gateway to Chaos
This xyz monster has the ability to rip every single card out of your opponent's hand, but it's not an effect you could feasibly resolve as the number of materials required to do it are impossibly high.
Zoodiac Boarbow
This archetype supposedly lives in a realm separate from reality and can be called from across time and space to vanquish evil wherever it may be found.
Lightsworn
You can target 1 card in your GY; banish both this card and 1 card from your hand, then place that target on top of the Deck.
Cyber Valley
Originally released as an ultra in its side set, this card was expensive until its release in Ghosts from the Past, despite attached to a fragile xyz focused deck. It's also one of only 2 monsters able to search rank-up-magics.
Blue-Eyes Shining Dragon
Tribute 1 "Blue-Eyes Ultimate Dragon"
You know this monster because it makes Accesscode Talker
Selene, Queen of the Master Magicians
This trap copies the power of the mightiest Ice Barrier Synchro
Terror of Trishula
These two monsters did battle for 1000 days, ultimately destroying each other in the process (2 answers required).
Zefraath and Tierra, Source of Destruction