Brand

You touch a creature and chant “I am your master now” in your native tongue. The creature must make a DC wisdom saving throw (disadvantage if they are below 50% health)

On a save throw, the creature becomes enraged at the one trying to brand them and gains advantage rolls against them.

On a fail throw, the creature is now branded and under the command of their master. They will follow the commands to the fullest, even if it kills them. 

Whenever they take damage while branded, they can make another wisdom save to break the branding.