Knife

The Knife is a melee weapon in Xenoblade Chronicles X, used by the Drifter, Enforcer, Psycorruptor and the Mastermind classes, with Rank 10 of the Mastermind class granting mastery and allowing any class to use it. Additionally, the characters Irina, Hope, Mia, and Celica use this weapon.

Overview
The Knife is mainly used as a versatile support weapon, since the Arts associated with it mainly involve buffing the party and weakening the enemy, especially since it's the only ground weapon that grants access to and Control. While the knife's overall attack power is low, their cooldowns are quick so they can attack faster, gain, and use the melee debuff Augments well (especially with Secondary Speed).

Although it is mainly a support weapon, it can act as a powerful damage dealer thanks to Black Bane, which deals damage that increases significantly with each debuff added. Since the Raygun debuffs enemies, it can help stack debuffs quickly.

It can also supplant ranged weapons thanks to Full Specs, which pairs well with most guns and TP builds.

Smooth Recovery works during Overdrive to quadruple the normal time extension as well as keep the entire team alive.

Signature Arts
This lists the Arts and the original user of the Art, as well as how it can be unlocked:
 * Black Bane - Unlocked via Celica's affinity mission New in New LA
 * Smooth Recovery - Unlocked via Irina's affinity mission Renewed Will
 * Secondary Speed - Unlocked via Hope's affinity mission A False Hope