Your Wisdom score increases by 2, and your Charisma score increases by 1.

As humanoids related to both fey and fiend, their lifespan varies anywhere between 100 to 300 years. They reach adulthood at approximately 20.

Firblings vary in alignment due to their opposing heritages. Depending on cultural upbringing, they may range anywhere from Neutral Good to Chaotic Evil.

Firblings vary between 6 and 8 feet tall. Your size is Medium.

You know the Thaumaturgy cantrip, and can cast Disguise Self once without expending a spell slot. Once you cast Disguise Self, you can't cast it again with this trait until you finish a short or long rest. When you use this version of disguise self, you can seem up to 3 feet shorter than normal, allowing you to more easily blend in with humans and elves.

You have the ability to communicate in a limited manner with beasts. They can understand the meaning of your words, though you have no special ability to understand them in return. You have advantage on all Charisma checks you make to influence them.

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.

Due to your dual heritage you can speak, read, and write Common, Elvish, and Infernal.