"The Sacred Riana Summons A Terrifying Imaginary Friend" is an article that discusses a performance by The Sacred Riana on America's Got Talent 2018. The article states that Riana is a magician and illusionist who rose to fame after winning Asia's Got Talent. During her performance on America's Got Talent, Riana summoned an imaginary friend named Lucy. The performance was described as terrifying and unsettling, leaving the judges and audience both amazed and frightened. Riana's unique style and ability to create an eerie atmosphere captivated the audience, making her a standout performer on the show.