2024 Phb Warlock 5e. The entity is a voice in the shadows—its identity unclear—but its boon to you is concrete: The warlock 5e has always been one of the most popular dnd classes, with its easy access to powerful combat spells, and their flavorful pacts with otherworldly entities.
More hit points are great on a class as frail as the warlock, but given the choice between this and resilient (constitution), you need proficiency in constitution saves much more than 40 hp and some extra healing. Combine grasp of hadar and repelling blast to forcibly move enemies so that an enemy is always within the elemental’s reach.