BloodBorne

From the Hunter's dream these masters of the hunt rose.

The Basics of the Hunt

Hunters gain proficiency in firearms and you can can deal (Your Level) damage to yourself as an action to gain 10 Blood Bullets which can be used with any firearm. If you attack something after being damaged, you regain 1d4 health per attack.

Hunter's Revenge

If you attack something after being damaged, you regain 1d4 health per attack.

Bloody Echoes

When you kill something you gain (Enemy CR)d20 Blood Echoes. A single Blood Echo is worth one copper and weighs nothing. Nobody else can carry your Blood Echoes.

One hand, one gun

You can now operate a firearm with one hand (so you could use two guns at once or have a short sword or something in the other) and you can reload your firearm as an action, bonus action, or reaction.

Blood Replacement

As an action you can spend (Your Level)x100 Blood Echoes to recover 1d10 health for each 100 Blood Echoes spent.

Unknown form

As an action you can transform into a form that not even the gods themselves understand. This transformation can be used once per day and lasts for 5 rounds, the time can be extended by consuming 1000 Blood Echoes to gain an extra turn. While in this state, you cannot be hurt (you can still hurt others though), you are transparent, you can fly at 50ft per turn, and have 300ft of true sight.

Live off their Blood

You no longer need to sleep, consume 300 Blood Echoes instead of an actual meal, and consume 500 Blood Echoes to gain 1d10 Temporary Hit Points.