Stygian
Yu-Gi-Oh! archetype · 3 cards
Stygian SecurityWC10-EN002 · Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia promotional cards · +2 printings
Stygian SergeantsWC10-EN003 · Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia promotional cards · +3 printings
Stygian Street PatrolDREV-EN099 · Duelist Revolution · +6 printings
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).