Umbral Horror
Yu-Gi-Oh! archetype · 11 cards
Corrupted KeysJOTL-EN072 · Judgment of the Light
Gorgonic Umbral HorrorBETB-EN007 · Beyond the Brave · +1 printing
Number C104: Umbral Horror MasqueradeJOTL-EN056 · Judgment of the Light · +8 printings
Number C104: Umbral Horror Masquerade VictoryBETB-EN043 · Beyond the Brave
Shining Umbral HorrorBETB-EN005 · Beyond the Brave
Thousand Umbral HorrorBETB-EN008 · Beyond the Brave
Umbral Horror GhostPRIO-EN010 · Primal Origin
Umbral Horror GhoulJOTL-EN012 · Judgment of the Light · +1 printing
Umbral Horror UnformJOTL-EN013 · Judgment of the Light · +1 printing
Umbral Horror Will o' the WispJOTL-EN014 · Judgment of the Light · +1 printing
V Umbral HorrorBETB-EN006 · Beyond the Brave
Archetypes from YGOPRODeck and YAML Yugi (Yugipedia).