Archfiend Black Skull Dragon (UTR) [CORE-EN048] Ultimate Rare

1 Level 6 "Archfiend" Normal Monster + 1 "Red-Eyes" Normal Monster
You can only Special Summon "Archfiend Black Skull Dragon(s)" once per turn. If this card attacks or is attacked, your opponent cannot activate cards or effects until the end of the Damage Step. If damage calculation is performed involving this Fusion Summoned card, at the end of the Battle Phase: You can target 1 "Red-Eyes" Normal Monster in your Graveyard; inflict damage to your opponent equal to its ATK in the Graveyard, then shuffle it into the Deck.