Do not multiclass — Sword Saint’s capstone and Int to AC scale with level.
You now have Greater Invisibility, Dimension Door, and Bane Blade. pathfinder kingmaker magus sword saint guide
Your weapon choice defines your playstyle. Here are the top three: Do not multiclass — Sword Saint’s capstone and
| Weapon | Crit Range | Crit Multiplier | Damage Die | Verdict | | :--- | :--- | :--- | :--- | :--- | | Estoc | 18-20 (x2) | x2 | 2d4 | Best overall. Finesse-able, high base damage, huge crit range. | | Rapier | 18-20 (x2) | x2 | 1d6 | Classic. Lower damage than Estoc, but more early-game options. | | Scimitar | 18-20 (x2) | x2 | 1d6 | Requires Slashing Grace; cannot be used with Piercing feats. Still great. | | Dueling Sword | 19-20 (x2) | x2 | 1d8 | Worse crit range. Only pick for roleplay. | You now have Greater Invisibility , Dimension Door
Recommendation: Estoc. It is Finesse-able, has 18-20 crit, and you can craft/buy excellent Estocs mid-to-late game.
You are the single-target assassin. You need friends to handle crowd control and buffs.
Avoid: Another Magus, a Rogue (you can't sneak attack reliably without flanking), a Monk (competes for DEX gear).