Galeb Duhr

Age, the Galeb Duhr are technically immortal. However, by the age of 400 they are so immobile they are functionally just large boulder
Size, Galeb Duhr stand around 8ft tall. Your size is medium.
Speed, Your movement speed is 25ft.
Elemental Nature, you are an elemental rather then humanoid.
Might of the Mountain, you are immune to the poisoned condition and poison damage. Additionally, you are resistant to bludgeoning, slashing and piercing damage from non magical attacks. However, you are vulnerable to acid and force damage.
Living Boulder, when you are resting you are indistinguishable from a normal boulder. However, this does not mean that people wont be suspicious if they find a boulder in a location that a it makes no sense for a boulder to be. A successful Dc 20 investigation check is required to discern that you are not infact a boulder but a sentient creature. 
Stone Fists, your unarmed attacks deal 1d10 damage.
Rolling Stone, you can cast the animate objects spell a number of times equal to your proficiency bonus with the following changes. You can only target 4 objects and they have to be made from stone. You recharge all spent uses after a long rest
Languages, You can speak, read, and write Common and Terran.