Martial Prodigy is a passive feature that grants Githyanki Proficiency with the Light Armour, Medium Armour, Shortswords, Longswords, and Greatswords.
Description
A lifetime of relentless training gave you Armour proficiency with 
Light armour and 
Medium armour, as well as Proficiency with 
Shortswords, 
Longswords, and 
Greatswords.
How to learn
Races:
- Character level 1: Githyanki
(Character level is the sum of all class levels for a multi-classed character.)