Homebrew Cambion Species Details

I have seen thee in her and I do adore thee:
My mistress show'd me thee and thy dog and thy bush.
(Caliban, The Tempest, Act 2, Scene 2)

Born of a hellish union, a cambion is the created progeny of a humanoid that has been influenced by a succubus and an incubus.  In themselves, devils are unable to create life.  Thus, they must manipulate the life-giving blessing of humanoids to create these children of devilish decent.  A succubus will seduce and take the seed of a humanoid male, usually a union that ends poorly for the one who would unknowingly be the source of this life giving ingredient.  The succubus will then give the seed to an incubus through relations of their own making, and he will in turn seduce a humanoid female and implant this tainted seed into her through sexual relations.  Greatly influenced by this pair of devils, the woman will be impregnated and will give birth to what appears to be a normal humanoid child.  The only signs of the child's devilish origins are that the babe does not breath, nor does the heart within them beat.  Midwives are taught to watch for this devilish sign and will normally destroy such a child before it can be set to suck and be nourished by its mother.  However, some are not sighted in this way and are allowed to grow.  Marked with cruelty and a selfish desire to rule those around them, a child born in this fashion is unable to gain control of their wicked nature until the age of seven when they learn to breath and their heart begins to beat.  Inherently evil, with their souls marked by the corruption of the lower planes, a cambion has a nature of wickedness.  Some can, at times, resist this nature in an unending battle against themselves.  However, all will ever hear the call of Malcanthet, queen of the succubus/incubus.

Cambions have, for all intents and purposes, four parents who were involved in their making.  They will inherit and display traits from each of them, though the devilish traits do not begin to appear until after they have reached the age of seven. Until this age, they will in all outward appearance take after their humanoid mother.  At this time of turning when they reach the age of seven, they will begin to develop physical traits that speak of the infernal influences upon their birth.  Almost always, a cambion will have some form of grotesque horns and a leathery tail that sometimes seems to have a life of its own. Their skin color will quickly change to what is most commonly a vibrant, blood red, though some are blackest black (the color of wet obsidian), or shades of yellow, or even deepest blue or vibrant purples.  Their eyes usually take on an insidious sulfur-yellow or blood red, with a great variety of pupil shapes.  They may grow goat-like hooves instead of feet, or extra fingers and toes.  The horns they grow will be unique to them, for no cambion will ever look like another. They can possess otherworldly beauty or be entirely grotesque.  Whatever form they take, they will always be creatures of a charismatic force that embraces or fights the wicked nature within.

Cambion Traits

You are the child of humanoids, touched by the taint of a union of succubus and incubus, possessing abilities and flaws from each of your parents.

Ability Score Increase

No matter what form you have taken, you are more agile and the force of your nature is strong.  Your Dexterity score will increase by 1, and your Charisma score increases by 2.  Because of the nature of your being, and the eternal struggle within,  you suffer a -1 adjustment to your Wisdom score.

Age

You age at a rate normal to your humanoid mother until you reach the age of maturity.  At that time you will not age, for you are immoral.  You can still be killed, but if allowed to live a life of peace without influence, you will live forever.

Alignment

At the core of your being, you are forever tainted by the evil of the infernal.  However, on occasion, you can resist this nature.  You walk the line between order and chaos, using both equally to obtain the purposes of your heart.

Size

Cambions stand at roughly the same height as a human when fully grown, although both your fiendish and humanoid parents' sizes may influence this to make you slightly shorter, or taller. Your size is medium.

Speed

You have a walking speed of 30 feet, though this can obviously be affected by carrying too much weight.

Darkvision

No matter who your humanoid parents were, you were tainted by fiendish blood.  You have superior vision in dark and dim conditions. 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 can’t discern color in darkness, only shades of gray.

The Aura of a Fiend

For most intents and purposes you count as a standard, living creature born of humanoid parents.  However, certain spells and effects that specifically deal in detection instead will mark you as a fiend. These include detect evil and good and the Divine Sense of a paladin.  You will ever carry the taint of the lower planes. 

The Blood of Hell

When you reach 3rd level, you obtain fiendish abilities that come to you in the form of simple magics.  You can cast the following:  produce Flame, thaumaturgy, and vicious mockery.  Your spellcasting ability score is Charisma.

You are also immune to natural flames, and resistant to flames and fire of a magical nature. (Just remember, your non-magical clothing or armor is not included, nor anything you are carrying that doesn't have its own protections)

The Power of Hell

When you reach 5th level, you gain more power out of your hellish blood.  You gain the ability to cast burning hands, charm person, and disguise self.  You may only each of these once, regaining the ability to use the spell after a long rest. Your spellcasting ability is Charisma.

Tongue of the Hells

Your childhood and your nature has given you the ability to speak, read and write in the Common tongue, as well as the screeching in fright and moaning in pain and pleasure of Infernal.