Your are small.

You are both Undead and Plant.

When calculating carry weight, you count as one size larger.

You have an extra set of arms that cannot be used for weapons.

You can see 60ft in dim light and in dark light as if it was dim.

A fungus is growing inside you, giving you abilities depending on your level.

Lvl. 2- You can disperse spores that let you create a telepathic link with any creature within 120ft. You gain immunity to poison and the poisoned condition. +2 Constitution.

Lvl. 3- Your darkvision increases to 120ft in dark light. You gain disadvantage on rolls when in direct sunlight.

Lvl. 6- You always have the speak with plants spell effects active.

Lvl. 10- You can disperse spore 120ft in a circular area that deal 1d10 poison damage +your Constitution modifier.