Two different ability scores of your choice increase by 1 and you gain proficiency in one skill of your choice.

Like other humans, singlesouls reach adulthood in their late teens and live less than a century. Both twins usually pass away from old age on the same day.

Because of the twins dual nature, they are typically lawful in alignment.

Each of the singlesoul twins are always exactly the same height and build. Your twins are both medium size.

The base walking speed for a pair of singlesoul twins is 45 feet, which is divided among each twin each turn as you choose.

Actions. Singlesouls have a single action, bonus action, and reaction between them. If you take the Dash, Disengage, Dodge, Help, Hide, Ready, or Search actions, both twins perform the action and gain its benefits.

Attacks. If you’re able to make multiple attack, you can divide these attacks between the twins. If you take the attack action with one twin, the other can attack as a bonus action. You don’t add your ability modifier to the damage of the bonus attack, unless that modifier is negative.

Hit points. Singlesoul twins have separate hit points. At first level, each twin has the hit points of a human of the same class. At higher levels, each twin’s hit point maximum increases by your Constitution modifier + half the class’s Hit Die roll.

Spellcasting. A singlesoul can only concentrate on one spell at a time, however, only one of the twins needs to concentrate on a spell to maintain it. When you cast a spell, either twin can provide the components, you can choose which twin is concentrating on it, and the spell can originate from the twin of your choice.

Magical Effects. If a spell or magical ability affects one twin, it affects them both, unless that spell causes damage or a condition or the twins are further than 100 feet apart.

Death. When a singlesoul twin is reduced to 0 hit points, its twin becomes incapacitated and able to move at only half speed. If one of the twins dies, the other twin quickly deteriorates and perishes 24 hours later if their partner does not return to life.

As long as both twins are on the same plane, they can sense the other’s emotional state. Each twin knows when the other takes damage. additionally, through their individual twin languages, singlesoul twins can communicate with half the words and twice the speed of other creatures.

If one twin is affected by a curse or disease, or is blinded, deafened, paralyzed, or poisoned, you can use your action to transfer that condition to the other twin.

You can speak, read, and write Common and one extra language of your choice.