When a genasi has two elements in its ancestry instead of only one, those elements often interfere with each other and produce only one element or the other -- but sometimes, the two elements work in harmony and the genasi manifests a dual element instead of one of the normal four.

As a slime genasi, you have manifested both earth and water, connecting you with the mysterious dual-element of slime, the fusion of water's fluidity and earth's alchemical variety. You live by concealing your feelings behind a graceful mask, appearing to feel whatever emotion is most convenient for a situation, but those who know you well have seen your true emotions slip out, which are often acrid, bitter, and caustic.

Slime genasi have bright green or greenish-yellow skin, often seeming sickly or jaundiced to those who don't know of their existence as a subrace. Except for a short period after bathing, their skin is always covered in a thin layer of transparent slime. Slime genasi usually have green, dark green, or black hair, but sometimes have white, blond, or even purple hair, with similar variations in eye color.

Slime Genasi Traits

Ability Score Increase

Your Dexterity score increases by 1.

Alchemical Resistance

You have resistance to acid damage and poison damage.

Caustic Touch

You know the primal savagery cantrip from Xanathar's Guide to Everything, and you can use it at-will. Alternatively, you can choose to know the acid splash cantrip instead. Constitution is your spellcasting ability for this spell.

Slimy

You have advantage on ability checks made to escape from being grappled or restrained or to squeeze through a tight space. In addition, you don't have to spend extra speed to move while squeezing.