Warlock is the stage at which the Hermit's path becomes truly sorcerous.
Spirituality grows and gives sharp warnings of danger;
Sorcery — the Warlock creates his own spells, relying on what has been studied, dissected and comprehended, and sometimes on his connection with the Spirit World;
Knowledge of witchcraft — having mastered the relevant areas of mysticism, he brews potions and makes mystical items better than before;
The eyes that peer into the secret are greatly strengthened.
The key here is that the Warlock creates his spells rather than receiving them ready-made. This distinguishes him from priests, to whom charms are granted, and brings him closer to the Master of Mysticism of the Apprentice path: both derive power from understanding.
The set includes a pair of eyes of a deceased person and a copy of the records of the previous Warlock — the path of knowledge again requires not only spoils, but also continuity.