You find the last pinch of piggydust in your pouch and throw it at the big orc and chant the magic verse, "Siggly, siggly, flipping biggly, bind this mind to this little piggly." The piggydust sparkles in the air and the orc is mesmerized.

"Tell me about the platinum piggy." you command.
    "Magic binds it,  magic finds it."

    "The little one knows." 


He is beginning to shake off the spell. 

You can... 

    run away
    stay and have a fair fight, although this guy is much bigger than you  
    try to pull your sword and run him through before the magic wears off.