<Tr> <Th> Element of stories featuring </Th> <Td> Alan Scott White Lantern Corps Green Lantern Corps Sinestro Corps Star Sapphires Red Lantern Corps Blue Lantern Corps Agent Orange Black Lantern Corps Indigo Tribe </Td> </Tr> <P> A power ring is an object featured in American comic books published by DC Comics . The power ring first appeared in All - American Comics #16 on July 14, 1940 . </P> <P> The first appearance of a power ring was in All - American Comics Number Sixteen on July 14, 1940, the flagship title of comic book publisher All - American Publications, which featured the first appearance of Alan Scott . Creator Martin Nodell has cited Richard Wagner's opera cycle The Ring of the Nibelung and the sight of a trainman's green railway lantern as inspirations for the combination of a magical ring and lantern . </P> <P> Alan Scott's ring is powered by the Green Flame, a magically empowered flame contained within a metallic orb that fell from space . The orb was found by a lamp maker named Chang, who fashioned into a lantern and ring . Later writers revised this to be a fragment of an object called the Starheart, the result of Guardians of the Universe collecting and isolating most of the magic forces in the universe . This early version of the ring is shown as being powerless against wooden objects . </P>

What are the different rings in green lantern