Yu-Gi-Oh GX Trading Cards - The Lost Millennium Foil Card - Reshef the Dark Being - TLM-EN033 ULTRA RARE
This card can only be Ritual Summoned with the Ritual Spell Card, "Final Ritual of the Ancients". Once per turn, by discarding 1 Spell Card from your hand, take control of 1 monster on your opponent's side of the field until the end of this turn.