Touch of Strahd

You have accepted a deal with Strahd von Zarovich granting you some vampiric abilities in exchange of information and servitude. 

You manifest an aspect of your Strahd's dreadful power. As a bonus action, you can tap into this power and transform for 1 minute. You gain the following benefits while transformed:

• You gain temporary hit points equal to 1d10 + your level. 
• Once during each of your turns, when you hit a creature with an attack roll, you can force it to make a Wisdom saving throw, and if the saving throw fails, the target is frightened of you until the end of your next turn.
• You are immune to the frightened.
• You gain the Spider Climb feature.
• You gain a +1 to all Strength based checks, saving throws, attacks, and damage.
• You gain resistance to one of your choice: slashing or piercing damage from non-magical attacks. However, you get vulnerability to radiant damage.

You can transform a number of times equal to your proficiency bonus, and you regain all expended after you consume some other creature's blood. If you die while transformed you immediately become a vampire spawn under Strahd's control.

Some effects of this pact with Strahd remain even outside of transformation. You don't need sleep and you gain the following Vampire Weaknesses. :

• Forbiddance.  You can’t enter a residence without an invitation from one of the occupants.
• Harmed by Running Water. You take 20 acid damage when you end your turn in running water.

Spider Climb. You can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.