Do you want to compare Sif with Amethyst? Discover the powers, weakness & weapons of Sif and Amethyst from Sif Biography and Amethyst Biography. Find out all about Sif and Amethyst.# Check out how is Sif unique and distinct from Amethyst. Discover their love interest, sidekicks, family tree and the movies and games list in which Sif and Amethyst have appeared. Find out everything about them here!