Ability Score Increase: Your Intelligence score increases by 1, and your Charisma score increases by 2.
Age: Tieflings mature at the same rate as humans but live a few years longer.
Size: Tieflings are about the same size and build as humans. Your size is Medium.
Speed: Your base walking speed is 30 feet.
Darkvision: Thanks to your infernal 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.
Hellish Resistance: You have resistance to fire damage.
Infernal Legacy: You know the Thaumaturgy cantrip. When you reach 3rd level, you can cast the Hellish Rebuke spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Darkness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Languages: You can speak, read, and write Common and Infernal.
Subrace (Mordenkainen's Tome of Foes): If your tiefling has a subrace from Mordenkainen's Tome of Foes, the traits of the chosen subrace replace the tiefling’s Ability Score Increase and Infernal Legacy traits given in the Player’s Handbook.
Abyssal
(Unearthed Arcana)
Ability Score Increase: Your Constitution score increases by 1, and your Charisma score increases by 2.
Abyssal Fortitude: Your hit point maximum increases by half your level (minimum 1).
Languages: You can speak, read, and write Common and Abyssal.
Abyssal Arcana: Each time you finish a long rest, you gain the ability to cast cantrips and spells randomly determined from a short list. At 1st level, you can cast a cantrip. When you reach 3rd level, you can also cast a 1st-level spell. At 5th level, you can cast a 2nd-level spell.
You can cast a spell gained from this trait only once until you complete your next long rest. You can cast a cantrip gained from this trait at will, as normal. For 1st-level spells whose effect changes if cast using a spell slot of 2nd level or higher, you cast the spell as if using a 2nd-level slot. Spells of 2nd level are cast as if using a 2nd-level slot.
At the end of each long rest, you lose the cantrips and spells previously granted by this feature, even if you did not cast them. You replace those cantrips and spells by rolling for new ones on the Abyssal Arcana Spells table. Roll separately for each cantrip and spell. If you roll the same spell or cantrip you gained at the end of your previous long rest, roll again until you get a different result.
Ability Score Increase: Your Charisma score increases by 2, and your Intelligence score increases by 1.
Legacy of Maladomini: You know the Thaumaturgy cantrip. When you reach 3rd level, you can cast the Ray of Sickness spell as a 2nd level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Crown of Madness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Dispater
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Dexterity score increases by 1.
Legacy of Dis: You know the Thaumaturgy cantrip. When you reach 3rd level, you can cast the Disguise Selfspell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Detect Thoughts spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Fierna
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Wisdom score increases by 1.
Legacy of Phlegethos: You know the Friends cantrip. When you reach 3rd level, you can cast the Charm Person spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Suggestion spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Glasya
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Dexterity score increases by 1.
Legacy of Malbolge: You know the Minor Illusion cantrip. When you reach 3rd level, you can cast the Disguise Self spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Invisibility spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Levistus
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Constitution score increases by 1.
Legacy of Stygia: You know the Ray of Frost cantrip. When you reach 3rd level, you can cast the Armor of Agathys spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Darkness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Mammon
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Intelligence score increases by 1.
Legacy of Minauros: You know the Mage Hand cantrip. When you reach 3rd level, you can cast the Tenser's Floating Disk spell once with this trait and regain the ability to do so when you finish a short or long rest. When you reach 5th level, you can cast the Arcane Lock spell once with this trait, requiring no material component, and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Mephistopheles
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Intelligence score increases by 1.
Legacy of Cania: You know the Mage Hand cantrip. When you reach 3rd level, you can cast the Burning Hands spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Flame Blade spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.
Feral: Your Intelligence score increases by 1, and your Dexterity score increases by 2. This trait replaces the Ability Score Increase trait.
Devil's Tongue: You know the Vicious Mockery cantrip. When you reach 3rd level, you can cast the Charm Person spell as a 2nd-level spell once with this trait. When you reach 5th level, you can cast the Enthrall spell once with this trait. You must finish a long rest to cast these spells once again with this trait. Charisma is your spellcasting ability for them. This trait replaces the Infernal Legacy trait.
Hellfire: Once you reach 3rd level, you can cast the Burning Hands spell once per day as a 2nd-level spell. This trait replaces the Hellish Rebuke spell of the Infernal Legacy trait.
Winged: You have bat-like wings sprouting from your shoulder blades. You have a flying speed of 30 feet while you aren't wearing heavy armor. This trait replaces the Infernal Legacy trait.
Zariel
(Mordekainen's Tome of Foes)
Ability Score Increase: Your Charisma score increases by 2, and your Strength score increases by 1.
Legacy of Avernus: You know the Thaumaturgy cantrip. When you reach 3rd level, you can cast the Searing Smite spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Branding Smite spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.