History of Arbor Warden

Arbor Warden is Exotic Titan chest armor introduced in Season of the Deep.

Overview

• Class/slot: Titan chest armor.
• Intrinsic perk, Barri-nade: channel defensive Light through your class ability to create a grenade that creates a barricade on impact.
• Lore: a Titan named Emreth finds a preserved plant in the Arcology and chooses to protect it.

Acquisition

• Drops from Solo Legend and Master Lost Sectors (Destiny 2 Wiki); Destinypedia just says legendary Lost Sectors, so the difficulty requirement may have changed.
• Exotic Armor Focusing, per the in-game source line, once it is in your Collections.