Touch of the Unholy

You have been touched by the unholy and given a necromantic blessing, or curse depending on how you look at it. You gain the following effects:

• All radiant damage you deal is now necrotic damage instead, lashing out as dark energies instead of holy light.
• Your creature type is Undead, rather than Humanoid. If you had a resistance to radiant damage, it is now gone. This effect can have different visual effects on your body, for example your flesh can start decaying, bones starting to be visible in places, your eyes start glowing with sickly energies, your skin becomes pale, or perhaps your nose rots off.
• You no longer need to eat, drink, breathe or sleep. Though you still need to rest to regenerate your wounds and regain your abilities.
• You are now immune to disease, gain resistance to poison damage and advantage on saving throws against poison.
• You gain Darkvision with a range of 60ft, if you already have Darkvision the current range instead increases by 30ft.