Your Wisdom is increased by 3, your Dexterity is increased by 1, and your Constitution is decreased by 2.

Do to your partial undead form, you are unable to age.

Due to your free will, your undead nature doesn't affect your alignment, it persists from your previous life to the one you have now.

Your past life as a human is still present in your undead form, as a result not much has changed besides your weight. Your height is between 5 and 6 feet, and your size is medium.

You can speak common and one extra language of your choice

Due to the newfound nature of your current form, your bodies needs have been replaced with new ones. 

• You no longer need to sleep, you spend your long rest digging vines in to the ground for nutrients instead of eating, during this period of digging for nutrients you are restrained and must spend an action you break the restraints 
• Your vines need to be watered 3 times a week 
• You can last up to 5 hours without air before the vines begin to suffocate and your bones will become brittle and easily break
• After 5 hours of being exposed to water your bones will begin to disintegrate for the next 4 months until you are completely dissolved   
• The fact your vines are keeping you somewhat alive you aren't classed as undead, and you can't heal yourself with the mending cantrip
• You are immune to the effects of aging, magical or non magical 

Your new form of exposed bone and red plantlife has further altered your body, and your time with death have warped your mind. You gain vulnerability to bludgeoning and fire damage, but immunity to the exhausted, unconscious, and frightened conditions. On top of that, your vines have coated your body with a slick membrane - you gain advantage on acrobatics against being grappled or escaping a grapple.

Taking advantage of your appearance after death, you've learnt to do something very interesting. All creatures have disadvantage on insight checks made against you, and you can use your action to pretend to be dead. Whilst you're pretending to be dead a creature can either make a perception check of dc 20 to notice the very miniscule movements of your vines, or if they're aware your alive then they don't need to make a check; if they're unsure they can make a history check.

Going down the list, this is the final trait your skeletal form has granted you. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You discern colours in that darkness only as shades of gray.