RD/KP05-JP041 ロイヤルデモンズ・コマンド Royal Demon’s Command
Normal Spell Card
[Requirement] You can activate by sending 1 monster (Fiend-Type) from the hand to the Graveyard.
[Effect] Choose 1 face-up monster (LIGHT/Fiend-Type) you control, it gains 1000 ATK until the end of the turn. Then, you can change that monster’s Battle Position (Attack Position to face-up Defense Position, Defense Position to face-up Attack Position).

Source