Vodoo-Bind

You touch a creature you want to bind the creatures soul to yours. When you take damage the creature has to make a wis save. If it succeeds it takes half of the damage you take (before your resitances and other stuff). If the creature fails the creature takes the full damage (before your resitances and other stuff) and if you gain an effect like stunned, the creature will get the same effect (if the creature isn't immune). 

The spell range is extended to 10ft range if cast as 3 level.

At 4 level spell you can target 1 additional target. Every additional higher spell slot used lets you target one more target.