Vennominaga.

This archetype is trash, don't question the extra deck, the blue eyes cards are for the pot of extravagances so you don't have to discard the ones you may have to use, use rescue rabbit to get out the king of feral imps using venom cobras, use dangers to get tribute fodder out while getting another card, use rise of the snake deity and offering to the snake deity to get out vennominaga, traptricks there to help, this is flooded with reptiles, as vennominon and vennominaga require them, use snake rain to discard venom serpent and venom snakes first, they're the useless ones, try to get a Vennominon in graveyard just in case of monster reborn, and if you don't and get another vennominon, its an extra 500 atk