To Tribute Summon this card face-up, you can Tribute a Continuous Spell/Trap you control, instead of a monster. Your opponent cannot target "True Draco" or "True King" monsters on the field with card effects, except this one, also they cannot be destroyed by your opponent's card effects. If this face-up Tribute Summoned monster leaves the field: You can Special Summon 1 "True Draco" or "True King" monster from your Deck in Defense Position.