Conjure Exhauriebat Viventem

You gain the service of a Exhauriebat Viventem

Your Exhauriebat Viventem acts independently of you, but it always obeys your commands. In combat, it rolls its own initiative and acts on its own turn.

When the Exhauriebat Viventem drops to 0 hit points, it disappears, leaving behind no physical form except the Black Diamond that was used in the summoning. It reappears after you cast this spell again.

While your Exhauriebat Viventem is within 100 feet of you, you can communicate with it telepathically. Additionally, as an action, you can see through your Exhauriebat Viventem's eyes and hear what it hears until the start of your next turn, gaining the benefits of any special senses that the Exhauriebat Viventem has. During this time, you are deaf and blind with regard to your own senses.

As an action, you can temporarily dismiss your Exhauriebat Viventem. It disappears into a pocket dimension where it awaits your summons. Alternatively, you can dismiss it forever. As an action while it is temporarily dismissed, you can cause it to reappear in any unoccupied space within 30 feet of you.

You can't have more than one Exhauriebat Viventem at a time. 

Finally, when you cast a spell with a range of touch, your Exhauriebat Viventem can deliver the spell as if it had cast the spell. Your Exhauriebat Viventem must be within 100 feet of you, and it must use its reaction to deliver the spell when you cast it. If the spell requires an attack roll, you use your attack modifier for the roll.