Vampiric Blood

You have been bitten by a vampire, and traces of vampiric blood runs through your body. You gain the following benefits:

• You can move up, down, and across vertical surfaces and upside down along ceilings. You gain a climbing speed equal to your walking speed.
• You grow long fangs that can be used as natural weapons you can use to make unarmed strikes, on a hit your fangs deal 1d6+STR piercing damage.
• If you are 5th level or higher, you can use an action to transform into bat as if affected by polymorph but not requiring your concentration, once you have transformed once with this ability you cannot transform again until you finish a long rest. If you are 8th level or higher, you can instead transform into mist as if affected by gaseous form.