Judgment Dragon (RYMP-EN104) [Ra Yellow Mega Pack]

Cannot be Normal Summoned or Set. Must be Special Summoned (from your hand) by having 4 or more "Lightsworn" monsters with different names in your Graveyard, and cannot be Special Summoned by other ways. You can pay 1000 Life Points; destroy all other cards on the field. During each of your End Phases: Send the top 4 cards of your Deck to the Graveyard. You must control this face-up card to activate and to resolve this effect.