Dual Wielding Ruler

Introduction
Effect: When attacking with two blades, there is a certain chance of temporarily increasing your Curved Dagger Mastery as well as your Blade Techniques by 1 level.

Part of a set with Two-Weapon Fighting, and Reckless Dual Wielder that all of which passively took effect in battle.

This is a specialty that Marvin obtained after levelling up his Ranger class to the level cap (Lv10)