Just above Trompe l'Œil, 25m to the left of Au Royaume des Elfes. Sitstart left with fragile holds, climb the overhang without using the arete via a dyno to a sloper and exit at the top.
Update (August 2016): this problem, originally graded 7b+/7c by Mounir Farhat and Grégoire Thibault, has been reopend by Antoine Crevot after the starting holds broke off.