Kairos Function Mask

Overview

The Kairos Function Mask is a Legendary Helmet for Hunters and one of the pieces of the Kairos Function Suit, a Legendary armor set from Destiny 2: Curse of Osiris with versions for Hunter, Titan and Warlock. The set's lore is written as research on the Vex.

The mask's flavor text reads: "Future War Cult has an artifact they call 'The Device' which may be Vex in origin." —Sister Faora, "Theories on the Vex"

Acquisition

Xûr sells the mask. The set can also be earned through rank-up packages from Brother Vance, and it is not a loot drop. Xûr's stock rotates, so the mask is only available when it appears in his inventory.