Fiendish Rhino Warrior

“Fiend monsters you control, except "Fiendish Rhino Warrior", cannot be destroyed by battle or card effects. If this card is sent to the GY: You can send 1 Fiend monster from your Deck to the GY, except "Fiendish Rhino Warrior". You can only use this effect of "Fiendish Rhino Warrior" once per turn.”