Ranger
Base Class: Ranger

You Gain ability to control blood of your enemy and make it suffer from bleeding. Every attack you deal will be more deadly with no sacrifice.

Level 3: Bloodshot Bond

Blood Bond: you can add (2d6 + WIS) Necrotic as additional damage.
Blood Absorption: or you can use (2d6 + WIS) to heal your self equal to half total damage your deal.
You can use this feature equal to your WIS modifier.Whenever you finish a Short or Long Rest, you can use this feature again.

Level 7: Blood Defense

When you're not incapacitated, if you take damage from any enemy you can use reaction to half it and make your enemy must make CON save equal to (8 + proficiency + WIS) if enemy fail it takes half damage too if enemy success it takes no damage. 
You can use this feature equal to your WIS modifier.

Colossus Slayer

Your tenacity can wear down even the most resilient foes. When you hit a creature with a weapon, the weapon deals an extra 1d8 damage to the target if it’s missing any of its Hit Points. You can deal this extra damage only once per turn.

Horde Breaker

Once on each of your turns when you make an attack with a weapon, you can make another attack with the same weapon against a different creature that is within 5 feet of the original target, that is within the weapon’s range, and that you haven’t attacked this turn.

Level 7: Blood Curse

You curse enemy that already you mark with Hunter’s Mark as Bonus action and dealt additional (4d8 + WIS) Necrotic damage 
You can use this feature equal to your WIS Modifier

Escape the Horde

Opportunity Attacks have Disadvantage against you.

Multiattack Defense

When a creature hits you with an attack roll, that creature has Disadvantage on all other attack rolls against you this turn.

Level 11: Bleeding DOT

You can use Bonus Action to curse enemy that you marked with Hunter’s Mark enemy must make CON Save (8 + proficiency + WIS) 
if success it takes 4d6 + WIS Necrotic damage and it's enemy speed become slow (half speed), 
When success it takes half damage and not slow 
This lasts for 1 minute but enemy can use action to repeat save at end of enemy turn.
You can use this feature again after finish Long rest.

Level 15: Defenseless

You know enemy weakness, when you attack enemy that already marked with Blood penetration Hunter's Mark you ignore every resistance they have.