Sentence:  ... were I <WSD>engifted</WSD> with the Promethean art of that Michael Angelo of literature, Sir Walter Scott, then should this picture of my romantic and incomparable friend, and his “delightful home,” exist for ever -- its coulouring should never fade, but bloom immortal, as the hues of Guido, and the tints of Titian. 
Meaning of the word marked with <WSD> tags:  Possessing a special and desirable trait.