You can target 1 face-up card you control; you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Machine-Type Synchro Monsters, also, destroy that card, and if you do, Special Summon 1 Crystron Tuner from your Deck. You can banish this card from your Graveyard; add 1 Crystron monster from your Deck to your hand, except Crystron Thystvern . You can only use 1 Crystron Thystvern effect per turn, and only once that turn.