Life-crystal

Rafan life crystals,found on Rafa V,are a misterious type of crystal.Many claim that they are good for the body when snapped in half,but,in large numbers sap inteligence.This effect drained the inteligence of the mythical Sharu,turning them into the Toka.When Lando Calrissian and Vuffi Raa discovered the Mindharp of Sharu the intelligence of the Toka was restored turning them back into the Sharu.