Super Yellow Lum
Super Yellow Lums are 10 yellow lums in one, only seen in the Gameboy Color version of Rayman 2. They are bigger than one regular Yellow Lum. They are 10x more powerful than a regular yellow lum and 2x more powerful than a Mega Yellow Lum.
Super Yellow lums are in the Playstation version of Rayman 2, where they have a large grin. They are the equvalent of 5 yellow lums.