Spartak Moscow are promising a "unique" display from the stands ahead of the Champions League clash with Barcelona.
The Russian side have the permission of UEFA, Spartak and officials at Luzhniki Stadium to go ahead with the show, the details of which are being kept strictly under wraps.
All that is known about the stunt is that fans in every sector of the 80,000-capacity arena, even the VIP tribunes, are expected to raise cuts of material to form a giant mosaic.
Their cue will be the emergence of the teams from the players' tunnel.
Spartak need to win the match to have any realistic chance of qualifying for the knockout stages of the Champions League while the Spanish giants will advance if they prevail.