Title, tags, and description

Give your major arcanum a Proper Title, something capitalized, evocative, maybe a little ominous. The "Misty Mirror" and "The Everflame" are good examples.

List its tags and other game elements, including its load (if any).

Write a brief description of what it is and how it appears to the PCs. Make it as clear and punchy as you can, hinting at the arcanum's power. But also, keep it short and concise. Aim for 75 words or less.

Draw it or find a picture to represent it, something to place at the top of the insert.