A sword saint relies on monk moreso
Preferably Lawful good for +5 AC robes.
I planned the following build:
Human Sword Saint. I recommend Scimitars (some good ones and magus specific versions exist), but dueling swords (could possibly skip slashing grace) and bastard swords are also good. Sai would be an interesting choice due to flurry, but not great for crits and spellstrike crits.
Dump Str, max Dex, high Int, highish Wis, rest Con
1 W. Finesse & Slashing Grace
2 TRADITIONAL MONK LEVEL: Bonus feat: Dodge
3 Crane Style
4 Magus Arcana: Pick Arcane Accuracy
5 Outflank
6 Bonus feat: Arcane Strike
7 Dazzling Display; Magus Arcana: Pick Enduring Blade
8
9 Shatter Defenses
10
11 Imp. Crit
12 Bonus feat: Weapon Spec
13 Blind Fight; Magus Arcana: Pick Ghost Blade
14
15 Greater Weapon Spec.
16 Magus Arcana: Pick Bane Blade
17 Critical Focus
18 Bonus feat: Staggering Critical
19 Maximize Spell; Magus Arcana: Pick Devoted Blade
Damage is unimpressive early on, but can be nearly untouchable. Obviously can go nova with Spellstrike and Perfect Strike. Over time the damage bonuses start to add up and has great accuracy to land even later iteratives, particularly with Brilliant Blade and Shatter Defenses. Dazzling Display is only chosen as a prereq. for Shatter Defenses, I assume another dedicated Intimidator in your party, such as Valerie or Jaethal.
If you use Eldiritch Arcana mod, you'd also want the Intensify Spell metamagic feat early, as that's pretty great for Shocking Grasp.