Pure Sword Saint 20 is excellent. But if you want more:
Crane Style — Crucial for Fighting Defensively Level 13: Crane Wing Level 15: Crane Riposte Level 17: Greater Weapon Focus (Estoc) pathfinder kingmaker magus sword saint guide
High AC, Initiative, and Attack rolls (includes +2 racial bonus) Safe health pool for frontline combat Intelligence Fuels Canny Defense, spell slots, and skills Wisdom Baseline Will saves Charisma Chosen Weapon Pure Sword Saint 20 is excellent
High (18-20+). Your primary stat for accuracy and armor. Katana (high crit)
If you play the Varnhold’s Lot DLC or the standalone Beneath the Stolen Lands roguelite mode:
Bastard Sword (high damage), Katana (high crit), or Elven Curve Blade (high crit finesse).