Powerhold the Moving Battery

Continuous Trap · Continuous · TRAP

“Special Summon this card as an Effect Monster (Machine/EARTH/Level 4/ATK 0/DEF 2000), then, you can equip 1 Level 4 Machine "Gadget" monster from your hand or Deck to this card. (This card is also still a Trap.) If Summoned this way, this card gains ATK equal to double the ATK of the monster equipped to it by this effect.”