This plotting took a grave turn when Dhritarashtra had to relent to the will of the masses and rightfully appointed his nephew Yudhishthira as crown prince. This went against the personal ambitions of both father and son (Dhritarashtra and Duryodhana) and drove Duryodhana into such a rage that he enthusiastically agreed to an evil ploy by Shakuni to murder Yudhishthira. Shakuni commissioned the construction of a palace in Varnavart, secretly built by incorporating flammable materials like oil, ghee etc. into the structure, most notably the lacquer known as lac. This palace was known as Lakshagraha. Duryodhana then successfully lobbied Dhritarashtra to send Yudhishthira to represent the royal household in Varnavarta during the celebrations of Shiva Mahotsava. The plan was to set the palace on fire during the night while Yudhishthira would likely be asleep. Yudhishthira left for Varnavrata, accompanied by his four brothers and their mother Kunti. The plan was discovered by their paternal uncle Vidura, who was very loyal to them and an extraordinarily wise man. In addition, Yudhishthira had been forewarned about this plot by a hermit who came to him and spoke of an imminent disaster. Vidura arranged for a tunnel to be secretly built for the Pandavs to safely escape the palace as it was set afire.