Halflings of the Tyr Coast

In my continuing work on species for my Dark Sun homebrew…

Hit Die. You begin play with two bonus hit die of the same type as your hit die at 1st level. These are not maxxed out for determining hit points. Roll them like you would for levels beyond 1st.
Ability Score Increase. If any of your ability scores are lower than 13, they increase to 13.
Age. You mature by 9 and can live nearly two centuries.
Size. You are around three and a half feet tall and weigh roughly 50 to 60 pounds. Your size is Small.
Speed. Your base walking and climbing speeds are 25 feet, but you do not take any penalty to movement from difficult terrain.
Ultravision. You can see into the ultraviolet spectrum. This allows you to see a great number of things you normally wouldn’t such as territorial markings from animals.
Quick Learner. Downtime training only takes 120 days.
Unfazed. You have advantage on saving throws against being frightened or stunned.
Iron Guts. You have advantage on saving throws against poison and disease, and you have resistance against poison damage.
Weapon Training. You are proficient with throwing weapons and spears.
Languages. You can speak Tyrish, Asnam, and two other languages of your choice.