Design a collage that brings together famous historical icons and mysterious elements. Use a split- tone background: one side should be darker, almost black with shades of deep blue and purple, while the other side fades into parchment- like tones. On the dark side, include mysterious symbols such as a shadowy human figure, a glowing eye, and an old key. On the lighter side, place recognizable historical artifacts like an old globe, an ancient scroll, and a knight's helmet. Merge the two sides slightly in the center, where shadows and light intermingle, suggesting the crossing between history and mystery. The color palette should be a balance between dark, mysterious hues and warmer, historical tones