Blood Link

Your right eye hurts for 1d4 hours after casting this spell which has seemingly no long term consequences... yet.

You link the health of two creatures. Choose one creature within touch range and then link it to another creature you touch (This effect can also be used on yourself). You have up to 2 rounds to do so if you have not enough movement (This costs only a action the first round). A hostile creature must succeed on a Constitution saving throw or be linked. Any damage taken by one creature is divided evenly (rounded up) between all linked creatures. This includes your Tainted by Khorne Class feature. 

At Higher Levels.

When you cast this spell using a spell slot of 2nd level or higher, you may target one additional creature for each slot level above 1st up to a maximum of 6.

Additionally, if cast using a spell slot of 3rd level or higher this spell has a range of 30 ft and lasts 2 hours. If cast using a spell slot of 5th or higher, it has a range of 50 ft. and applies the charmed effect on hostile creatures that it links and lasts 4 hours.