Choose a creature (must be a Beast) to become your Origin Animal. Your appearance has several traits of that creature. If it has wings or tail, so do you. You may want other characteristics to be present depending on the chosen animal, such as a turtle shell or bird talons for example.

Depending on the chosen Origin Animal, you belong to one of the following bloodlines: Mammal, Bird, Reptile, Amphibian or Fish. For animals not based on real creatures, consult your DM.

You gain the Swim and Flying speed your Origin Animal has, but they are limited to 15 feet. If you have flying speed, you are unable to fly while wearing medium or heavy armor.

You have all natural weapons of your Origin Animal. They deal 1d8 damage, keeping the same damage type as the original. The range for those natural weapons becomes 5 feet, and it keeps none of it's additional effects.

You know the Speak with Animal spell. Once per Long Rest, you can cast this spell without expending a spell slot.

Select one of the following Animal Inheritances you fulfil the prerequisites for:

Agile

Prerequisite: None.
Description: You choose between an additional 10 feet in your walking speed, or and additional 5 feet in walking speed and one other movement speed you already have.

Darkvision

Prerequisite: Origin Animal must have Darkvision.
Description: You have Darkvision with a range of 60 feet.

Inherit Trait

Prerequisite: DM's approval.
Description: You get one feature or sense from your Origin Animal's stat block.

Sharp Senses

Prerequisite: None.
Description: You have advantage on Wisdom (Perception) checks that rely on either hearing or sight. You can only choose one of the two senses.

Select one of the following Bloodline Inheritances you fulfil the prerequisites for:

Extra Animal Inheritance

Prerequisite: Mammal Bloodline.
Description: Choose another Animal Inheritance. You can't choose the same one twice.

Natural Armor

Prerequisite: Reptile Bloodline.
Description: Your AC is 15 when not wearing armor.

Naturally Stealthy

Prerequisite: Mammal, Bird or Reptile Bloodline.
Description: You have proficiency in Dexterity (Stealth) and Wisdom (Perception).

Poison Resistance

Prerequisite: Amphibian Bloodline.
Description: You have Resistance to Poison damage.

Powerful Flight

Prerequisite: Bird Bloodline; Must have Flying Speed.
Description: Your Flying Speed becomes 30 feet and you are able to fly even when wearing medium armor.

Slow Fall

Prerequisite: Bird Bloodline.
Description: You don't take fall damage unless your Movement Speed is reduced to 0 feet (such as in effects like the Paralyzed condition).

Water Adaptability

Prerequisite: Fish Bloodline.
Description: Your Swimming Speed becomes 30 feet and you are able to breathe underwater.

When you select the Inherit Trait as Animal Inheritance or Bloodline Inheritance (Extra Animal Inheritance), you may pick certain features of the following races:

Tabaxi

Prerequisite: Mammal Bloodline (must be Feline).
Description: You get the Feline Agility feature from the Tabaxi race.

Kenku

Prerequisite: Bird Bloodline; Crow as Origin Animal.
Description: You get the Mimicry feature from the Kenku race.

Tortle

Prerequisite: Reptile Bloodline; Turtle as Origin Animal; Can't pick Bloodline Inheritance (Natural Armor).
Description: You get the Natural Armor feature from the Tortle race.

Loxodon

Prerequisite: Mammal Bloodline; Elephant as Origin Animal.
Description: You get the Trunk feature from the Loxodon race.

Harengon

Prerequisite: Mammal Bloodline; Rabbit as Origin Animal.
Description: You get the Rabbit Hop feature from the Harengon race.

Lizardfolk

Prerequisite: Reptile Bloodline.
Description: You get the Hungry Jaws feature from the Lizardfolk race.

Minotaur

Prerequisite: Mammal Bloodline; Bull as Origin Animal.
Description: You get the Hammering Horns feature from the Minotaur race.