The Technique - Hidden Blade is a Technique Scroll that is dropped by the King Slime. Once activated, it allows the player to throw hidden knives in any direction by pressing the Throwing Technique key, at the cost of 1 Technique Point. These knives are not affected by gravity and damage enemies. They adopt the same critical strike chance bonuses as the current throwing weapon being held.
As with all Technique Scrolls, Technique Points are generated by dealing throwing damage, and will be lost outside of combat. Only one Technique Scroll may be active at a time.