Build

Sword Saint (race: Elf) - Trickster

Pure Sword Saint (Magus) 20 with a Dueling Sword, DEX/INT Elf. Chosen Weapon gives Weapon Focus, Slashing Grace gives DEX to damage, Canny Defense adds INT to AC unarmored. Every round is Spell Combat with a Spellstrike through the sword (Vampiric Touch in spike fights, Dimension Strike for touch AC); Arcane Accuracy adds INT to attack and the arcane pool enhances the sword (keen, energy, then +X). Weapon Mastery at 20.

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Commits to: Sword Saint
Race: Elf
Point buy: STR 10, DEX 17, CON 14, INT 16, WIS 11, CHA 7
Mythic path: Trickster, rank 10 at 20
Equipment that scales with level: amulet of natural armor, ring of protection, weapon enhancement, headband of mental perfection, belt of physical perfection
Other worn items: Engraved Lucky Bracers from 1 to 17 (counted): +1 luck AC in the free wrist slot.; Embroidered Gloves from 18 (counted): +3 luck AC in the free hands slot (replaces the bracers' +1 luck).

Level by level

Level	Class	Picks	Gear from this level
1	Sword Saint	Chosen Weapon:Dueling Sword · chosen weapon Weapon Finesse · general feat Shocking Grasp · spell Shield · spell	Dueling Sword
2	Sword Saint
3	Sword Saint	Slashing Grace:Dueling Sword · general feat Arcane Accuracy · magus arcana
4	Sword Saint	Mirror Image · spell Blur · spell Cat's Grace · spell
5	Sword Saint	Dodge · general feat Combat Reflexes · bonus feat Close to the Abyss · mythic hero Last Stand · mythic ability
6	Sword Saint	Prescient Attack · magus arcana
7	Sword Saint	Outflank · general feat Haste · spell Displacement · spell Vampiric Touch · spell
8	Sword Saint	Weapon Finesse (Mythic) · mythic feat
9	Sword Saint	Maximize Spell · general feat Dimension Strike · magus arcana
10	Sword Saint	Greater Invisibility · spell Stoneskin · spell
11	Sword Saint	Improved Critical:Dueling Sword · general feat Weapon Specialization:Dueling Sword · bonus feat Ascendant Element:Electricity · mythic ability Perception 1 · mythic trick
12	Sword Saint	Enduring Blade · magus arcana Athletics 1 · mythic trick Improved Mythic Trick: Perception (Rank 2) · mythic trick Improved Critical (Mythic):Dueling Sword · mythic feat
13	Sword Saint	Greater Weapon Focus:Dueling Sword · general feat
14	Sword Saint
15	Sword Saint	Improved Critical II:Dueling Sword · general feat Bane Blade · magus arcana Enduring Spells · mythic ability Persuasion 1 · mythic trick
16	Sword Saint	Transformation · spell
17	Sword Saint	Improved Critical III:Dueling Sword · general feat Greater Weapon Specialization:Dueling Sword · bonus feat Stealth 1 · mythic trick Improved Mythic Trick: Athletics (Rank 2) · mythic trick Weapon Focus (Mythic):Dueling Sword · mythic feat
18	Sword Saint	Hasted Assault · magus arcana Greater Enduring Spells · mythic ability Abundant Casting · mythic ability Mobility 1 · mythic trick Greater Mythic Trick: Athletics (Rank 3) · mythic trick Flawless Attacks · mythic feat
19	Sword Saint	Improved Critical IV:Dueling Sword · general feat
20	Sword Saint	Extra Mythic Ability:Abundant Casting · mythic feat

Open points and things not counted yet

Dueling Sword and Slashing Grace use tabletop text until their WotR pages are read.
The magus spell list is Paizo's (PCGen) filtered to spells that exist in WotR; replace with the WotR list.
Spell Combat spellstrikes Vampiric Touch in spike fights (Maximized from the 6th-level slots in the once-a-day fight) and Shocking Grasp otherwise, through demons' immunity with Ascendant Element (Electricity); Shocking Grasp's 1st-level slots aren't tracked.
Prescient Attack, Enduring Blade, Bane Blade and Hasted Assault are recorded only; Dimension Strike shows as the touch line.