I have never tried the yarn, but here is what Red Heart has to say about it:
Red Heart Boutique Magical is four yarns in one! The shiny, brushed, metallic and multicolored fibers come together to make one gorgeous yarn. Beautiful striped patterns form as you knit and crochet. Magical is a size-4 medium weight acrylic yarn. Machine wash with cold, gentle cycle and machine dry on low.
Here is a free crochet pattern from Red Heart that utilizes Boutique Mystical: Renaissance Capelet Crochet Pattern