The Crystalline Codex takes the form of an ancient book, its covers and pages crafted from translucent ice that refracts and scatters light in mesmerizing patterns. Its contents are written in an arcane language that shifts and rearranges when exposed to moonlight, revealing hidden messages and prophecies. The artifact emanates a subtle chill, and its icy pages are adorned with intricate crystalline formations that resemble mythical creatures and course obstacles.

The Crystalline Codex serves as a mystical guide, revealing knowledge and clues at pivotal moments to those investigating the frozen phoenix's manifestation on the course, though its influence is passive and indirect, requiring the bearers to interpret its cryptic messages and navigate the challenges it presents.