FTK Enablers
The somehow untouched on the banlist main deck enabler that's been part of FTKs since its release
Cannon Soldier (or Toon Cannon Soldier)
Injection
Injection Fairy Lily
Royal Magical Library
A Galatea target; Soul Charge from banished
Orcustrated Return from a Different Dimension
One card Ib, the World Chalice Justiciar
T.G. Rocket Salamander
This Instant Fusion target got two separate cards banned
Lyrilusc - Independent Nightingale
Echo
Click & Echo
Spell (Activate), Place, Search, Place
Spell Power Mastery
An Infernoble out to Dark Ruler; A counter-trap with a repeated name
Flamvell Counter Counter
Saw a bit of play in OCG Tearlament
Fengli the Soldrapom
Two spell/spellcaster-related cards that are both on the banlist for this reason
Tempest Magician and Magical Explosion
Bouncer
Cactus Bouncer
Spell, Spell, Spell, Search Droll
Magical Abductor
A card that looks like it'll be a staple Thrust target next format; A way to fuse in Dinos
Different Dimension Ground Xeno
Evoltile Megachirella
Combined with Banquet of Millions, this FTK combo plagued Master Duel for around 3 months
D.D. Dynamite
Resurgent
Benghalancer the Resurgent
Spell, Spell, Banish an opponent's monster
Mythical Beast Master Cerberus
(This card is always treated as a "Blue-Eyes" card.); Killed Dragon Link after its Master Duel ban
Dragon Spirit of White Dragon Wyverburster
Would probably be actually good if Altergeist had a Link-1
Altergeist Peritrator
Superheavy Samurai Soulbreaker Armor
Institution
Mythical Institution
Remove, Remove, Remove, Summon itself and Bounce an opponent's summon
Mythical Beast Garuda
-$100x3; A key card in Master Duel's 2024 LP event
BonFire Cracker
Also doubles as a King's Sarcophagus target
Horus' Servant