Your body is made of acidic slime, capable of dissolving most organic substances. When making an unarmed attack, you may choose to deal acid damage, in place of the attack's normal damage type. Additionally, when you are damaged by a melee attack, you may use your reaction to deal 1d6 Acid damage to the triggering attacker.

Your ooze-like body allows you to engulf other creatures even while you continue fighting. You do not require a free hand to attempt to grapple a creature.

Your body is malleable, allowing you to squeeze through gaps too small for other living creatures. You can move through a space as narrow as 1 inch wide without squeezing, and are immune to the grappled condition, But you cannot wear heavy or medium armor and your carrying capacity is reduced by half. When moving through small spaces equipment that would not fit through the gap is left behind.

As a reaction when you would be reduced to 0 hit points and still have at least one hit dice remaining, you may choose to split yourself into a number of tiny oozes equal to your remaining hit dice. Each of these oozes has a speed of 10 ft., and hit points equal to one hit dice + your constitution modifier. These oozes cannot take any action other than a move action. At the end of a long rest, any remaining oozes merge together to reform your body.

Your gelatinous body is resilient against traditional weapons, but highly susceptible to extreme temperatures. You are resistant to bludgeoning, piercing, and slashing damage from nonmagical weapons, but vulnerable to fire and cold damage, as well as damage caused by spells or effects that drain moisture. You have disadvantage on attack rolls and ability checks while in extreme climates.

Myxapia are capable of exchanging thoughts and memories on a cellular level. You can telepathically speak to any creature you are touching. You don't need to share a language to be heard.

You don't have true sex organs, but your body is amorphous enough to simulate most sexual implements. As a bonus action on your turn, You may choose to create one of the following sexual implements anywhere on your gelatinous body such as Ass, Breasts, Cock, Mouth, *****, or Pseudopod. This implement lasts until you dismiss it as a free action. You ignore the negative effects of oversized penetration.

You may be worn as armor by a willing creature attuned to you as if you were a magic item, and while wearing you, and no other armor, the creature host adds your Constitution modifier to its AC. When an attack made against your attuned host misses, the attack is repeated against you.

While not capable of the same perfect mimicry as your mimguise cousins, you can alter your color and texture to some degree, granting you advantage on checks made to disguise yourself or conceal your nature.

While worn by an attuned creature, you do not require food or drink and cannot be removed from your host unless rendered unconscious. You always occupy the same space as your host. If you or your host take the move action or are moved through any form of forced movement, the other is moved as well, without spending any movement of their own.

Concubi are sexual parasites, and must feed on the sexual energies of other creatures to sustain themselves. When a creature within 5 ft. of you climaxes, you may use your reaction to feed on their climax, Expending a number of hit dice up to your proficiency bonus, and regaining hit points as if during a short rest. You must feed on at least one climax each day, or suffer a level of exhaustion.

The Brand of addiction afficts those who bear it with a powerful hunger for sex and a need to consume sexual fluids.

The bearer of this brand gains an addiction to sexual fluids. This addiction has an initial addiction save DC of 18, and follows the normal rules for addiction and withdrawal. However it cannot be removed by any means while the brand remains present.

Additionally, a creature afflicted by this brand must consume at least 8 ounces of cum or other sexual fluids in order to gain the benefits of a long rest.

While above half your maximum hit points, you have advantage on checks made to recover from the effects of climax