Silver Gadget

When this card is placed onto the battlefield: You may place mana cost {4} or lower Artifact Creature from your hand onto the Battlefield. If this card is destroyed by battle or card effect: You can place 1 mana cost {4} or lower "Gadget" monster from your Deck onto the battlefield, except "Silver Gadget". You can only use 1 "Silver Gadget" effect per turn, and only once that turn.