Greed is one of the Mirror traits in the Vaas: Insanity DLC. It lets Vaas keep some Cash after dying, and its top level lets you go back to where you died and pick up your whole inventory.
Dying in this roguelite DLC normally costs you your unspent Cash. Each Greed level raises how much you keep. The last level lets you return to your death spot and recover everything you had on you.
Walk up to the Mirror in a safe house and spend Cash, the currency you earn in Vaas: Insanity. Levels unlock in order, and each one costs more than the one before.
The early levels are cheap insurance if you die often. The final level is expensive, so buy it once the core health and gadget upgrades are done.
Envy (Vaas)
Adds up to four gadget sockets to the weapon wheel.
Pride (Vaas)
Gives replenishing Healing Syringes, then raises maximum health in five steps.
Sloth (Vaas)
Adds syringe capacity, the Camera, the Wingsuit, Parachute and Grapple, faster crouch movement and vehicles at safe areas.
Vaas' Wrath
Improves takedowns: speed boosts, reloads, small heals, front takedowns on alerted enemies and takedowns on Heavies.