The Master-at-Arms is an Ascendancy Class for the Duelist Class, a DEX / STR hybrid class that starts on the bottom of the Passive Tree, similar to the Mercenary.
GGG has yet to reveal specifics about the Master-at-Arms, and there isn't any reference from PoE 1. However, the internal name for Master-at-Arms was "Weapon Master," which can help us make some predictions about the Ascendancy.
Here are some possible predictions:
- Bonuses for wielding two weapon-types
- Allowing Skill Gems to be used with other base weapon types
- Extra Weapon Set Points
We'll learn more about the Duelist and Master-at-Arms in the coming days, so stay tuned for more info.