Increase one ability score by 1 and a different ability score by 2 

You are a Monstrosity 

You can replace one of your attacks with a blast of acidic saliva. When you use this feature choose weather its a 30 foot line or a 15 foot cone. Every creature in the area must make a Dexterity saving throw with a DC equal to 8 + proficiency bonus + your constitution modifier or take 2d8 radiant damage on a fail or half as much on a success. The damage increases to 3d8 at 5th level, 4d8 at 11th level and 5d8 at 17th level. You can use this feature a number of times equal to your proficiency bonus per long rest.

You have a Bite attack that deals 2d4 piercing damage

While not wearing armour you can add +2 to your armour class

You can detect and pinpoint the origin of vibrations within 30 ft., provided that you and the source of the vibrations are in contact with the same ground or substance. Tremorsense can't be used to detect flying or incorporeal creatures.

You have darkvision out to a range of 60 feet

You can speak read and write Common and Draconic