Kijin

ability score increase: Your Strength score increases by 2, and your Constitution score increases by 1

age: 250

alignment: lawful

Size: Medium

speed: 30ft

Languages:

race features:
Darkvision: Thanks to your oni heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray. Oni Fortitude: You have advantage on saving throws against being poisoned, and you have resistance to poison damage. Oni Ancestry: You can tap into your oni bloodline to enhance your physical abilities. Once per long rest, you can enter a state of heightened power for 1 minute. During this time, you gain advantage on Strength checks and saving throws, and your unarmed strikes deal an additional 1d6 force damage. After using this ability, you can't use it again until you finish a long rest. Infernal Legacy
Your oni bloodline grants you access to innate magical abilities. You can cast Thaumaturgy at will. Once you reach 3rd level, you can cast the Hellish Rebuke spell as a 2nd-level spell once per long rest. Once you reach 5th level, you can cast the Darkness spell once per long rest. Constitution is your spellcasting ability for these spells. Relentless Endurance
When you are reduced to 0 hit points but not killed outright, you can drop to 1 hit point instead. You can’t use this feature again until you finish a long rest.