The Crest of Alpha Lupi is an Exotic Gear Piece for Titans in Destiny 2.
It’s a random drop and can sometimes be given as a random quest reward. I received it at the very end of the story, after completing the final main quest in the Tower Hub area (talk to everyone). This quest always gives an exotic engram, but it’s completely random what item you get after decrypting it. You could get any other exotic from it.
Exotic Name: Crest of Alpha Lupi
Type: Chest Armor
Item Description: Whoever survives our passing does so only by our consent.
Special Ability #1: Survival Well — Generates an additional Orb of Light from Supers and a healing pulse when Barricade is activated.
Special Ability #2: Improves weapon handling for equipped Power weapon.
Acquired by: Random drop & random quest reward. Got it from decoding an exotic engram that was given to me after the final main mission.