Boot-Up Admiral - Destroyer Dynamo

Effect

Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by sending 2 "Gadget" Monster Cards from your hand and/or face-up field to the GY. Cannot be destroyed by battle or card effects while you control a "Gadget" monster or a "Gadget" Monster Card equipped to a monster. Once per turn: You can target 1 other card on the field; destroy it.