Eld knows that specific chants or hidden criteria can unlock powerful sub-skills that others don't even know exist.
A terminally ill top player of a popular VRMMO dies and is reborn into a world that is nearly identical to the game he mastered. Isekai Kenja no Tensei Musou ~Geemu no Chishiki...
While Eld appears weak because of his low level, he uses "buff stacking" and critical hit multipliers to solo boss-level monsters that would normally wipe out entire high-level parties. 📖 Comparison: Is this "My Isekai Life"? Eld knows that specific chants or hidden criteria