Buff Added Skill Enhancement (Rabam's Enlightenment). You can learn the 1st enhanced skill at Lv. 56 or higher, the 2nd at Lv. 57 or higher, and the 3rd at Lv. 58 or higher. You will need to learn the prerequisite skills to learn the enhanced skills. You may only select one of two enhanced skills per level.
QoL <November 18 Update Preview> "Core" skills, which make existing Awakening skills one step more powerful, and "Rabam's Enlightenment: 3rd Skill Enhancement" will be coming in the November 18 update. We hope you'll look forward to these expanded and more powerful skills.