The Eldritch Esoterica lexicon is rectangular with covers that curve upward slightly at the ends. The spine of the book sports a white oval with a pale green symbol comprised of three spikes at the top and bottom. Both covers are decorated by a large, blue heart-shaped symbol with a pale green outline. The rest of the lexicon is black.
"Eldritch" can mean "supernatural", "weird", or "eerie". "Esoterica" can refer to things that are impractical, understood by few, or private. A collection is a group of related objects or information. "Yin Yang" is a Chinese philosophical concept of spiritual balance.
Eldritch Esoterica's ground combo begins with a downward slash, followed by a leftward/rightward swipe. Zexion then places the lexicon on the ground and slams it closed on enemies. For the combo finisher, Zexion sends a bird-like illusion, similarly colored to the Taboo Text, hurtling toward enemies.
Eldritch Esoterica's aerial combo consists of a downward slash, an upward slash, and finally Zexion sends a bird-like illusion hurtling toward enemies.
When Eldritch Esoterica contacts an enemy, a periwinkle blue circle bursts out along with white feathers.
| Superiority | Sunrise | Shimmer | Iceberg | Firefly | Eldritch Esoterica | Gibbous | Volcanics | Serenade | The Hanged Man | Docile Vallota | Soleil Couchant | Fate Rebellion|
Soul Eater | Mage's Staff | Knight's Shield | Kingdom Key D | Kingdom Key