Melt butter in pot. Sauté onion. Sprinkle flour to absorb butter. Slowly add cans of milk, stirring constantly. Add all cans of soup, stirring between each, and let cook. Add corn and stir and let cook. Add seafood and let cook. Add onions and Tony’s. Let cook for 30-45 minutes. Add one cap of the crab boil. Once finished if it is too think add some water.