If you control an "Archfiend" card, you can Special Summon this card (from your hand), but if you do, this card cannot attack this turn, and you can only Special Summon "Archfiend Commander" this way once per turn. When you do: Target 1 "Archfiend" card you control; destroy it. When this card is Tribute Summoned: You can target 1 Level 6 "Archfiend" monster in your Graveyard; Special Summon that target in face-up Defense Position.