Font of Blood

Use the primal Wild Magic force of Rage to sap the lifeforce of an enemy and sustain yours -  when striking an enemy, their blood flows through your wounds, replacing that which you have previously lost and bolstering your lifeforce. 

Once per day, beginning at level 3, when making a successful melee attack against a living creature during a Rage, you gain 1d6 plus your level in temporary Hitpoints, to a maximum of the amount of damage you caused. The creature must make a Constitution Saving Throw with a DC equal to the total attack roll you made against it. A failure results in the effect taking place, and a success leads to no effect. 

At Higher Levels. 

6th Level: You gain an extra charge of Font of Blood. 

9th Level: You add another d6 to your roll. 

12th Level: You gain an extra charge of Font of Blood. 

15th Level: You add another d6 to your roll.