The box comes with:
-"Die Magie des Schwarzen Auges" (The Magic of the Black Eye) 112 pages
-"Die Götter des Schwarzen Auges" (The Gods of the Black Eye) 92 pages
-"Codex Cantiones" 272 pages
-"Mysteria Arkana" 248 pages
You get a full treatment of all things Magic or supernatural in Aventurien. Everything, from Spells, Magic Items, Magic Creatures, Magic Languages, Daemons, Gods, ancient History of Aventurien and much more is in there!