Death Bond

As you fall to the ground with mere moments left of your life you call upon the foe that vanquished you, bonding their life force to your own. When you drop to 0 hit points in combat you can use your reaction to cast this spell. You target the creature that dropped you to 0 hit points, and they are instantly killed. When this spell is cast, you immediately die, and your soul is destroyed. The only way you are able to be revived is by a wish spell. After the target dies, they are able to be revived by any means of reviving the dead as long as they meet the requirements.