As the clock ticks down to Comic-Con International -- it's less than a month away, start packing! -- LEGO has announced a convention-exclusive Marvel Super Heroes playset: the "Throne of Ultron" from Avengers: Age of Ultron.

Revealed by The Hollywood Reporter, the 203-piece set features an Ultron minifigures and three Ultron Sentries. It's priced at a reasonable $39.99, but you may have a devil of a time getting one, as they'll parceled out in a limited number each day.

Last year, LEGO released three convention-exclusive sets: Rocket Raccoon's Warbird for LEGO Marvel Super Heroes, the 1966 Batmobile for LEGO DC Super Heroes and The Phantom for LEGO Star Wars.

Comic-Con will be held July 8-12 at the San Diego Convention Center.