Silver Gadget
When this card is Normal or Special Summoned: You can Special Summon 1 Level 4 Machine monster from your hand. If this card is destroyed by battle or card effect: You can Special Summon 1 Level 4 "Gadget" monster from your Deck, except "Silver Gadget". You can only use 1 "Silver Gadget" effect per turn, and only once that turn.