When this card is destroyed by battle and sent to the Graveyard: You can Special Summon 1 EARTH monster with 1500 or less ATK from your Deck, in Attack Position.
Gadget monsters search each other out when they are summoned. Giant Rat can be used to start this search loop by Special Summoning any of the Gadget monster from your deck.
Most Amazoness monsters have 1500 or lower attack so Giant Rat will be able to search them. Their best combo starter, Amazoness Princess, can be searched by Giant Rat to setup your board.
U.A. decks lack low-level monsters so they can often brick. Giant Rat can be a good addition to use as tribute fodder or to search U.A. Midfielder.
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