Small Stone (Tawntin Racial Fighter Archetype)

Small Stone (Fighter;Tawntin)
There is a saying among the Tawntin that a small stone, if it falls in the right way, can cause an avalanche. This principal is applied in the Tindan (literally “small stone”) school of fighting, the practitioners of which through certain stances, grips, and sheer strength learn to successfully wield weapons too large for them.

Weapon and Armour Proficiency
A small stone is not proficient with heavy armour, but can use Medium-sized weaponry as if it was sized for Small creatures.

Stature Within
At 3rd level, a small stone grows to feel most natural fighting with Medium-sized weaponry, and while wielding it treats their own size as Medium when calculating CMD and CMB.

This ability replaces the Armor Training received at 3rd level, which is instead gained at 7th level.7th level Armor Training is similarly gained at 11th level, and so on.