The Foe Splicer

The Foe Splicer uses the blood and tissue of slain monsters to cast augment their own abilities through study and experimentation, they can figure out what makes a specific foe tick and turn their abilities against them for their own gain. 

Adept Zoologist

When you join this trade at 3rd level, as part of your travels how to quickly adapt to the creatures you face. You gain the following benefits:

• You obtain a special preserving pouch used to contain bodily materials. You can hold a number of materials equal to twice your proficiency bonus, if you try to obtain more, you must choose one to discard.
• Rapid Adaptation As a reaction, when you deal damage to a creature with an attack you may save a portion of blood or tissue from the creature unless it's an Elemental, Undead, or a Construct. You gain resistance to all damage originating from that creature until your next turn.  
• Identify Weakness When you hit an creature with an attack that requires an attack roll, you deal an additional additional hemocraft die of damage to creatures of the same creature type you have obtained bodily materials obtained from your Rapid Adaptation feature this additional damage stays active until you finish a long rest. 

Sanguine Bolster

Starting at 3rd level, you learn to augment the resiliency of your own blood. You gain an additional use of your Blood Maledict feature. In addition, as a bonus action you can expend a use of your Blood Maledict feature to gain a number of temporary hit points equal to twice your Constitution Modifier. 

Foe Clot

Upon reaching 7th level, When you finish a long rest you may take bodily materials you've collected from a foe, and study them more closely. Your experimentation will grant you the ability to alter your form temporarily gaining the following benefits: 

The DM chooses or rolls on an ability table to gain one of the following effects

•  The DM chooses, a condition immunity(1), an Action(2), Bonus Action(3), or Reaction(4) from a foe you've obtained materials from since your last long rest. Alternatively the DM may roll 1d4 to determine the ability gained. These abilities may be used a number of times equal to your proficiency bonus times per short rest. 
•  The DM chooses, an Ability Score from a foe you've obtained materials from since your last long rest, you replaced your ability score with that score until your next long rest. 
• A proficiency in a skill of your choosing that from a foe you've obtained materials from since your last long rest. If you already have proficiency in the chosen skill you double your proficiency bonus until your next long rest.

 At level 15, you may choose two of the Foe Clot effects, the same effect cannot be chosen twice. 

Bloodline Boon

When you select a creature material for your Foe Clot feature, you may also again one of the following:

•  If the selected foe has the "natural armor" description of its AC, your Base AC becomes that armor class until your next long rest. You still benefit from other bonuses to AC from features, shields, and armor.
• - As an action, you can assume the size of a foe selected as part of your Foe Clot feature, as if you were affected by the Enlarge/Reduce spell. (no concentration required, up to one minute)
• - You may a foe selected as part of your Foe Clot feature's senses, this sense lasts until your next long rest.

Blood Curse of Symbiosis

At 15th level, you hone your hemocraft to tear corruption from the minds and bodies of your allies—and to punish those responsible for it. You gain the Blood Curse of Symbiosis for your Blood Maledict feature. This doesn’t count against your number of blood curses known.

Blood Curse of Symbiosis

 

As a bonus action, choose one creature you can see within 30 ft. that you have obtained material from the target is now charmed and frightened of you for up to one minute.

Amplify. You take half damage from all sources while this curse is applied. A creature that is charmed, or frightened as a result of this curse takes half of the damage that was prevented by this curse.

Complete Vein Control

Upon reaching 18th level, the blood in your veins is so mailable you have complete control over it's effects. When you access you Sanguine Bolster feature it now uses double your constitution score, rather than your constitution modifier. In addition you may now choose up to materials for your Foe Clot feature, and you may choose the same option more than once, but no more than twice.