Orichalcos
Yu-Gi-Oh! archetype · 3 cards
Orichalcos ShunorosJUMP-EN035 · Shonen Jump March 2010 subscription bonus · +2 printings
Orichalcos Sword of SealingMAMO-EN022 · Magnificent Monsters · +2 printings
The Seal of OrichalcosLC03-EN001 · Legendary Collection 3: Yugi's World · +4 printings
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).