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Inside Message: Truth is...you're legendary. Hope your birthday does you justice! (Nerd Nugget) Sent as a baby to Earth from the dying planet of Krypton, Kal-El was found and adopted by farmers and renamed Clark Kent. As Superman, he protects humanity with extraordinary powers including superhuman strength, speed, and invulnerability. Why be mild-mannered when sending a birthday wish? Strengthen your message with the Man of Steel and make their big day Super Hero-worthy.