Reducing Phlegm: Spend a hope during combat: grant an ally for 1 temporary hit point until the end of the combat. Temporary hit points replace previously existing temporary hit points.

After combat is complete, you gain an additional hope.  

Bolstering Humours: Mark a stress: Grant an ally within melee range an extra 1d6 of damage to their next successful attack. This effect expires at the end of combat.

You can administer this out of combat to give advantage to a target ally.

The Doctor Will See You Now: You see telltale signs of injuries in your allies and foes. You can only use this once per day.Pick one and mark 2 stress:

Your control over blood allows you to heal your allies when in dangerous conditions. Heal all allies within close range by using your blood bolts to bolster their health for 1d3+ your knowledge modifier.

You see your enemies weaknesses and know how to exploit them. Make a blood bolt attack against every enemy within close range. Every successful strike makes the target/s vulnerable to the next attack to successsfully hit them.

Draining Vitality: Mark a stress: On successfully striking a target with blood bolt, you create a tether than drains the target and grants you 1 temporary hit point that lasts until the end of combat. Temporary hit points replace previously existing temporary hit points.

This improves to 2 temporary hit points at level 5, and 3 temporary hit points at level 10.

These hands were once meant to save: Mark a stress.: Imbue a held weapon with the power of your blood bolt.

When you make a weapon attack against a target, add on a blood bolt damage roll to the attacks damage. The damage is considered to be apart of the weapon.

An Oath Reborn: You feel the blood flow down your hands and know much more is left to be done. 

Mark 3 stress: Until the end of the day, every weapon attack is considered to be imbued with the power of your blood bolt.