Looking to build a million-dollar nest egg? Look at this trio of financial dividend payers covering a broad spectrum of investment styles.Financial stocks aren't usually very exciting, but that doesn't mean they can't be highly rewarding. And if you are looking to become a millionaire, you should have some exposure to them in your portfolio. Here are three options -- W.P. Carey (WPC -0.81%), Toronto-Dominion Bank (TD 0.21%), and Visa (V -0.19%) -- that cover a lot of investment ground and pay you well to ow ...