Green Duston (LTGY-EN043) - Lord of the Tachyon Galaxy Unlimited

Cannot be used as a Fusion, Synchro or Xyz Material for a Summon. While this card is face-up on the field, it cannot be Tributed. When this card on the field is destroyed: The controller targets 1 Spell/Trap Card they control; return that target to the hand. You can only control 1 face-up "Green Duston".