The Dawnguard Scout is a 4th-level spellcaster, thier spellcasting ability is Charisma (spell save DC 12, +4 to hit with spell attacks) they have the following Paladin spells prepared:  

1st-level (3 slots)

Dawnguard Amulet. Has resistance to Necrotic damage, creatures that deal necrotic damage to the Scout cannot heal by the amount of necrotic damage dealt.   Divine Sense (4/day). As an action, detects if there are Daedra or Undead within 60 feet; which the Scout can see, that are invisible or disguised.   Lay on Hands (20 points/day). As an action, the Scout can heal a creature up to thier points remaining. Alternatively the scout can expend 5 points to cure one disease or end one poison. Has no affect on undead or constructs.   Channel Divinity (1/halfday). Choosing from the following two options, the Dawnguard Scout can channel divinity once per short rest:
Abjure Enemy. As an action, chooses one creature within 60 feet that is visible. That creature must make a Charisma saving throw DC 12 or become frightened and immobile for the duration. Daedra and undead have disadvantage on the saving throw.
Vow of Enmity. As a bonus action, chooses one creature within 10 feet. The Scout has advantage on all attack rolls against it for 1 minute.   Crossbow Expert. Ignores the loading quality of crossbows. Being within 5 feet of a hostile creature doesn’t impose disadvantage on ranged attack rolls.