For the first time ever, Mukul Roy addressed a public meeting in Kolkata today - not as ruling Trinamool big dad in Bengal but as BJP's newly acquired missile against Mamata Banerjee. And Mukul Roy did, in a way, draw blood. For the first time on Bengal's political stage, he attacked Ms Banerjee's nephew and Trinamool MP Abhishek Banerjee, called 'yuvaraj' by his fans in the party.