Siren

Sirens are at home along the waters of the Stormwreck Sea. They settle on rocky coasts and remote islands, and even on floating piles of kelp. Sirens are mercurial creatures who can turn in an instant from lonely to repulsed, from desirous to hateful, from welcoming to irritated, from loving to murderous—and then back again. They are fascinated with ships, and enjoy toying with them. One siren might call out to a passing crew for company, only to capriciously draw the ship into an entangling mass of kelp. Another might lure a vessel onto jagged rocks so as to study the wreckage and learn more about the strange contraption. But as the number of Brazen Coalition ships passing through siren-controlled waters has increased over the years, a growing number of sirens have decided to satisfy their curiosity by taking positions on ship crews—including, in at least one case, the position of captain.

Sirens are humanoid creatures with birdlike features. Their long, slender arms extend into powerful wings that easily carry their light frames into the air. Their fingers bear sharp claws but are nimble enough to wield weapons and perform fine manipulation. Crests of feathery plumage start between their eyes and cover the backs of their heads.

Creating a Siren

Ability Score Increase. Your Charisma score increases by 2.
Alignment. Most sirens lean toward chaotic alignment, cherishing the freedom and independence that comes from joining a pirate crew.
Size. Sirens stand about 5 to 6 feet tall, but their bodies are slender and their bones partially hollow to facilitate their flight. Your size is Medium.
Speed. Your base walking speed is 25 feet.
Flight. You have a flying speed of 30 feet. You can’t use your flying speed while you wear medium or heavy armor. (If your campaign uses the variant rule for encumbrance, you can’t use your flying speed if you are encumbered.)
Siren’s Song. You know the Friends cantrip and can cast it without material components.
Languages. You can speak, read, and write Common (if it exists in your campaign) and Siren.

Source: Plane Shift - Ixalan

Racial Options

There are a few options to make your character fit the ideas you may have. The Ability Score Increase, Size, and even Languages can all be customized to better fit your character's history. Maybe you come from a very hardy people, like the Dwarves, but your character can't handle even the slightest cold breeze, but they make up for it with their incredible intellect. You could have been born of the tall and long Elves, but you find yourself barely coming up to some of their hips. Your Goblin may have been adopted by a couple of loving Genasi and they taught you to speak Primordial instead of Goblin. The options listed under your chosen race are just suggestions to easily fit your character within their culture's society, but you can change things up to make your character truly yours. There may be limitations set by the DM; rarely will you find a Large Fairy or a Tiny Goliath, but if you have a good story-driven reason for different character options, anything can be possible. Below are open-ended options for customizing your race.
Ability Score Increase. Increase one ability score by 2, and increase a different one by 1.
Size. Your size is within one size option of your race's average size.
Languages. You can speak, read, and write Common and one other language that you and your DM agree is appropriate for the character.

Choosing a Class

Artificer
Barbarian
Bard
Cleric
Druid
Fighter
Monk
Paladin
Ranger
Rogue
Sorcerer
Warlock
Wizard