So you need
A Maester with the Lead and Black Iron and 4 other links (7)
Robert Baratheon (TotH) with Imposter! and Oberyn's Guile(3)
Lady Genna (1)
King's Pavilion (1)
Source of Influence (1)
Put Imposter! on robert then use the influence to make him martell and then put Oberyn's Guile on him. Then use the Maester to give robert an INT icon and -6 strength (he gets +3 from imposter).
Initiate an INT challenge, and robert's str will go from 3 to zero (due to Pavilion) and you will automatically lose. Then have robert stand himself and you will be able to initiate another challenge from Genna.
Use 13 cards to draw the other 47 lol.