Supplemental relief. Supplemental relief based on a declaratory judgment may be

granted wherever necessary or proper. The application for relief shall be by petition in the original case. If the court deems the petition sufficient, it shall, on such reasonable notice as it prescribes, require any adverse party whose rights have been adjudicated to show cause why such relief should not be granted. [Report 1943; October 31, 1997, effective January 24, 1998; November 9, 2001, effective February 15, 2002]