if i were to throw a guess in the dark, it will be a clone of Machina Gearframe.1800 attack monster whos effect goes off only when normal summoned, searches for all the other cards. To balance this card from being overpowered, it already isnt a legal deepsea diva target as well as the fact that the boss monster cannot use it as one of the 3 tributes for its effect since its level 4(unless konami is going to throw the A legendary Ocean+Warrior of Atlantis in the structure deck), making it a balanced searcher in a way.
the deck already has 2 destruction cards for face up and face down. it has a beater that easy turns from 1400>22*00. a card that provides extra normal summons and a card that special summons from the deck if it does battle damage with its low attack power. It only sounds fitting that the last card would be a searcher in some way.