Curious, thoughtful, and analytical, the merfolk of Zendikar are natural scholars and explorers. In the past, merfolk society was organized around their belief in three deities. But in the wake of the reappearance of the Eldrazi, the merfolk have realized that their faith was a web of lies, built on a corrupted memory of the Eldrazi titans handed down from generation to generation. In peaceful times, the merfolk might have fought over the ultimate meaning of this revelation. But faced with the danger presented by the Eldrazi broods, the merfolk have largely set aside their differences and joined together in a united force. Old grudges still linger, but the well-being of the merfolk race—and the world—far outweigh any ancient conflicts between creeds.
Merfolk are associated with blue mana, though the traditional merfolk creeds express this connection in different ways.
BORN OF THE SEA
Merfolk are an amphibious race, born and at home in the water but comfortable on dry land. Humanoid in form, they have skin of ivory, silver, russet, blue, or deep purple. Long fins extend from the backs of their forearms and calves, and their fingers and toes are webbed. The hairlike growths on their heads are either thick and bristly like the needles of a sea urchin, or long and wavy, resembling fine seaweed. In either case, these growths typically range in color from red to warm brown to black. Male merfolk have similar growths extending down from their cheekbones.
Merfolk wear little clothing unless they are armored for battle. Even then, they drape themselves with nets and a minimum of cloth, wearing armor crafted of large, bleached seashells and augmented with leather.
Your merfolk character has a number of traits in common with other members of this race.
Ability Score Increase. Your Charisma score increases by 1.
Age. Merfolk mature at the same rate humans do and reach adulthood around the age of 20. They live considerably longer than humans, though, often reaching well over 100 years.
Alignment. Most merfolk are neutral, though merfolk of the Emeria and Cosi creeds have chaotic leanings.
Size. Merfolk are about the same size and build as humans. Your size is Medium.
Speed. Your base walking speed is 30 feet. You also have a swimming speed of 30 feet.
Amphibious. You can breathe air and water.
Languages. You can speak, read, and write Common, Merfolk, and one extra language of your choice
Creeds. The merfolk race is divided into three creeds, founded on the principles of Emeria(wind), Ula (water), and Cosi (the trickster). A merfolk isn’t born into a creed but chooses it upon reaching adulthood, and it is rare for a merfolk not to choose a creed. Merfolk of the wind and water creeds aren’t hostile to each other, but members of each creed regard the other creed with a vague disdain. Members of both those creeds regard the Cosi creed with suspicion and some degree of fear, and Cosi-creed adherents tend to keep their affiliation secret. There are also two colour subraces, Green and Blue. Choose one of these creeds or colours for your character.
Image – https://www.dandwiki.com/wiki/Merfolk_Erectus_(5e_Race)