Your hefty body is quite resilient, and you gain +2 to your Constitution, while your sole, infernal eye, granting you +1 to your Wisdom, as you bear witness to what man-thing sages can only experience in their most scarring of visions.

Fimir are extraordinarily venerable, with their eldest matriarchs living for nearly a thousand years. Most low-born Fimir, such as yourself, naturally live less than half of that lifespan, infrequently living for roughly 400 years, which is still incredibly long.

Fimir are quite large beings, but their size varies on their caste. The lesser Shearls grow to 7 feet in height, while the common Fimm and mystical Dirach can reach a staggering 8 feet in height, weighing nearly 200 kilograms, and the exalted Fianna and venerable Mearghs reach heights of 10 feet, and weigh several hundred kilograms. You are a Shearl, Fimm, or Dirach, and are size Medium.

It is optional to choose to be size Large for roleplay purposes, as most Fimir are size Large, but it isn't recommended gameplay-wise.

Fimir are Monstrosities, specifically chaos-born Monstrosities, and you gain Advantage on Intimidation rolls.

Your magical eye grants you Darkvision for 65 feet and Truesight for 15 feet. However, your visions weaken your foul soul, and you have Disadvantage on Saving Throws and Attack Rolls made against Fiends.

You can speak and comprehend, but not read and write, in Abyssal, and you can read and write in Draconic. You can also learn one more language of your choosing.

Your thick hide grants you Natural Armor, giving you a base AC of 12. Alongside this, you are Resistant to Poison damage, but your demonic ancestry makes you Vulnerable to Radiant damage.

Your close ties to the unknowable horrors of the Warp grant you dark abilities, invocations most unclean, and abilities beyond mortal comprehension. You can cast Eldritch Blast as a Cantrip.