Reactor
Yu-Gi-Oh! archetype · 6 cards
Ancient Gear Reactor DragonSR03-EN001 · Machine Reactor Structure Deck · +1 printing
Psychic ReactorEXVC-EN071 · Extreme Victory · +2 printings
Reactor SlimeLED7-EN002 · Legendary Duelists: Rage of Ra · +2 printings
Spell Reactor RECRMS-EN014 · Crimson Crisis
Summon Reactor SKCRMS-EN012 · Crimson Crisis
Trap Reactor Y FICRMS-EN013 · Crimson Crisis
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).