Illithid Traiits

As an Illithid you will have the following traits.

Ability Score Increase. Your Intelligence score increases by 2, and your Charisma increases by 1.

Age. As a tadpole, Illithid only live for 10 years. After being implanted into a humanoid host and transforming into a true Illithid, they live for approximately 125 years.

Alignment. The vast majority of Illithid are evil, as they seek to either subjugate, devour, or eliminate all other races in the multiverse, and as per their preference for structured society, they tend to be lawful. Each individual may differ slightly, though too much and they may find themselves ostracized.

Exiled Illithid will usually stay true to their evil impulses, largely due to their nutritional requirements of humanoid brains. Some, however, have learned to integrate into humanoid society. These Illithid tend towards neutrality, and rare instances of good.

Size. Illithid tend to be tall and thin, usually about 6 feet in height. Your size is Medium.

Speed . Your base walking speed is 30 feet.

Alien Form. Your creature type is aberation, instead of humanoid.

Superior Darkvision . You have darkvision up to a range of 120 feet. You can see in dim light as if it were bright light, but can't see colors, only shades of gray.

Cerebral Diet. Illithid do not subsist on a normal diet, instead they gain nourishment through consuming the brain of a living humanoid. You must consume at least one brain per month.

Extract Brain. If you kill a humanoid within 5 ft. of you, you may use your bonus action to grasp the creature with your tentacles and extract it's brain, consuming it.

Psionics. Your mind is the apex of mental potential, granting you astounding psionic abilities. You know the mage hand cantrip (the hand is invisible), and at 3rd level you may cast detect thoughts once per day.

Your spellcasting ability for these spells is Intelligence.

Telepathy. You can communicate telepathically with any creature, regardless of whether you share a language, within 30 feet of you. This range increases to 60 feet at 5th level, and to 120 feet at 10th level. When communicating telepathically, you may express your thoughts through imagery, emotion, and intent, as well as through language.

Languages . You can speak, read, and write Common and Deep Speech, and you can read and write Qualith. Speaking is difficult and unnatural for you, as it requires you to use one of your tentacles as psuedo-tongue. Qualith is a braille-like, written language, infused with subtle psionic energy. It is read through touch via an Illithid's tentacles, and is indecipherable by non-Illithid, except in some very rare cases, and even then comprehension is limited.

Spell

The following spell is intended for (though not restricted to) those who wish to play an Illithid Wizard (or other spellcaster) and simulate playing either a true Illithid (via a Psionic reflavored Spellcaster) or an Illithid arcanist.

This spell does not necessarily need to be restricted to Illithid PCs. Should the DM choose to, they may make this spell available to their players, regardless of whether or not any of them are Illithid.

Also, the listed class restrictions below are mostly a formality. If a player made a Druid, or Cleric, etc. but it would make sense for their particular character to have/learn Mind Blast, then let them have it as an option if you think it's acceptable.