Chains bound in Blood

As an action, summon a red shackle around both your own and your chosen target's wrist, binding your lives together.

• Target must succeed a WIS/INT saving throw of DC 12 + caster's WIS/INT modifier or be affected with the (life-bound) condition.
• While (life-bound) condition is active target will only attack the caster without stop, unable to move out of five feet of the caster.
• Any damage dealt to the caster directly affects the target, and any damage dealt to the target deals half to the caster. Healing will not work while condition is active.
• Caster may only attack the target but may take any other action.
• Allies can attempt to end the spell by taking an action to unlock the shackle, making the same check as the target. On a success the spell ends, on a failure it continues.
• Unless ended by outside force, spell only ends when either caster or target fall to 0 hit points.

Using a higher level spell-slot: When casting Chains bound in Blood at higher levels, add an additional target per level above 2. When caster takes damage, the same amount is dealt to all targets. When damage is dealt to a target, all other targets take half damage (same as caster)