Oath of enslavement

A party member enslaved you and you serve them and obey their will. They are your master and you gain powers from them. 

Channel Divinity

When you take this oath at 3rd level, you gain the following two Channel Divinity options.

Holy healing As an action, you can give your master health from your hit points multiplied by your charisma modifier. (with a minimum multiplier of +1). When you do this, you lose the hit points you gave away. 

Divine guardian As an action, you can call upon your divine power to surround yourself with an avatar. Your armor class increases by 5, you get 20 temporary hit points, your strength becomes 19, and you add 1d10 radiant damage to your attacks. When your temporary hit points get to zero, the avatar fades and you cannot activate it again until you take a long rest. 

Oath Spells

You gain oath spells at the paladin levels listed.

Oath of Devotion Spells

Aura of protection

Starting at 7th level, you and friendly creatures within 10 feet of you have resistance to nonmagical attacks while you are conscious.

At 18th level, the range of this aura increases to 30 feet.

Purity of Spirit

Beginning at 15th level, you automatically absorb the damage your master takes

Avatar of servitude

At 20th level, as an action, you can do any of your master’s attacks 

 

For example, if your master was a sorcerer, you could cast any spells that your master could.