• Level 1: 13 INT, 1 Pyro, 1 Warfare, Executioner
  
• Level 2: 14 INT, 11 WIT, 1 Scoundrel
  
• Level 3: 17 INT, 13 Memory, 1 Poly, Mnemonic
  
• Level 4: 18 INT, 11 STR, 2 Warfare
  
• Level 5: 19 INT, 14 Memory, 2 Scoundrel
  
• Level 6: 21 INT, 15 Memory, 2 Poly
  
• Level 7: 22 INT, 12 STR, 2 Pyro
  
• Level 8: 24 INT, 3 Scoundrel, Savage Sortilege
  
• Level 9: 25 INT, 16 Memory, 4 Scoundrel
  
• Level 10: 27 INT, 5 Scoundrel
  
• Level 11: 29 INT, 6 Scoundrel
  
• Level 12: 31 INT, 7 Scoundrel
  
• Level 13: 33 INT, 8 Scoundrel, Hothead
  
• Level 14: 35 INT, 9 Scoundrel
  
• Level 15: 13 WIT, 10 Scoundrel
  
• Level 16: 36 INT, 15 WIT, 3 Poly
  
• Level 17: 17 WIT, 3 Warfare
  
• Level 18: 40 INT, 3 Pyro, Bigger and Better or Glass Cannon
  
• Level 19: 19 WIT, 4 Pyro
  
• Level 20: 21 WIT, 5 Pyro
  
• Level 21: 23 WIT, 6 Pyro

If the requirements already met with the help of your gear, respec the attributes or combat skills and relocate them elsewhere where it could yield more benefits like getting more Pyrokinetic / Scoundrel.

Once you obtained Divine Spark 2-handed Unique in Arx, swap most of the beneficial combat skill points into Two-Handed for more damage output.

Normally at lvl 3, if the character is on her own, it would be better to take Torutrer instead to easily apply Burn debuff. But as I've made a synergy build, not only it basically covered half of the things this build are supposed to do but it also does them better. So it's highly recommended to run them together: Elemental Conjurer

(this build still does well on it own, but it's much better when both are run together)

• Lesson in Wit: +5 WIT / -5 CON

• Dragon +2 WIT -2 CON

• Thievery 1st → Sneaking 2nd

• Look out for gear with Scoundrel, Pyro, Wits or INT, Belts with Critchance is ideal, although if you found some rare Two-Handed, that would nice as well for Staff or Divine Spark later.
  
  
• Use Rings with Pyro, Scoundrel or Wits
  
  
• Dual-wielding STR weapons:
  

  • Pros: can proc multiple sparks without good positioning, just regular attack alone or Flurry, you can send 2~3 procs flying.
    Easy to find good weapons with high critchance, runeslots and mixed magic damage.
    
  • Cons: lack single target / focused magic damage

  
  
• Staff:
  need good positioning to hit multi-targets with Warfare abilities in order to proc multiple Sparks
  

  • Pros: high magic damage, attacks hurt with or without involving Spark. Better variety of focused magic damage output on single target.
    
  • Cons: good leveled staffs are rare to come by.

  
  
• Either ways, once in Arx, swap and use Dinvine Spark unique 2H for:
  

  +25% Critchance, +2 Two-Handed, +2 Pyrokinetic, deals Fire Damage.

• Amulet: Flame Rune (+4/5/6% Critchance)
  
  
• Armour Flame Rune(+7/9/11% Fire Resistance)
  
  
• Weapon: Flame Rune (+11/13/15% Flame damage)

• Amulet: Power Flame (+2/3 INT)
  
  
• Armour Power Flame (+2/3 INT)
  
  
• Weapon: Power Flame (+2/3 INT)

• Neck: 10% Fire Resist, +2% Crit, +5% Dodge
  
• Ring: +10% Poison Resist, +1 Scoundrel

• Ideal Party Initiative Order: 1st place or 2nd place if ran with my Conjurer, so the Spellsword can be one of the first to jump on enemies when they are still crowded together, to make the best use out of Spark bounces.
  
  
• Haste: It's recommended to have someone else in the party buff her so she can have extra +1 AP recovery. If you took Glass Cannon for her then there won't be a problem.
  
  
• Poison Upgrade: combining any poison source + any weapon to get extra poison damage on the weapon. Keep in mind, poison can heal undead target, so if it's a new weapon, take moment to see if any close upcoming fights have undeads or not before applying Poison.

• Ignition (skippable): with Torturer talent, it's an ideal and cheap spell to set up Burn debuffs on nearby enemies, giving them a -15% Fire Resistance (Skippable if already covered by other synergy character)
  
  
• Bleed Fire: apply another -20% Fire resistance on top of Burn status, use as replacement for the Spellsword when Ignition is covered.
  
  
• Battle Stomp: Frontal AoE, can proc multiple Sparks on hits.
  
  
• Battering Ram: Rush foward to selected spot, proc multiple Sparks on hits.
  
  
• Sparking Wings: Melee attack bounce a spark at nearby enemy, dealing Fire damage.
  

  Spark scales with Character Level, INT and Pyro.

  
  
• Adrenaline: Gain 2 AP for this turn but lose 2 AP on the next turn (a tradeoff), use it when you need to confirm a kill to trigger Executioner talent or when you really want to setup some defensive buffs or just simply want to finish off some high threat targets.
  
  
• Chloroform: deal magic damage and apply Sleeping to vulnerable target, hard CC that target for a turn if they don't take damage.
  
  
• Venom Coating: apply Poison damage to your weapon, skip if already covered by other synergy character.
  
  
• Whirlwind: AoE attack, spin around hitting nearby enemies, proc multiple Sparks.
  
  
• Cloak n Dagger: a mobility skill that available to your kit early in the game when needed. It also does not break Invisibility/Sneak.
  
  
• Heart of Steel: raise physical armour and regen even more each turn, you can use it as a pre-buff before a battle because it has long duration (4 turns)
  
  
• Bull Horns/Rush: Rush at enemies, proc multiple Sparks for every target hit on the traveling way. It has short 1 turn CD, so it's spammable each turn. (replaces Battering Ram)
  
  
• Enrage: +100% critchance making every Sparks bounces dealing critical hits once you have Savage Sortilege. It apply Muted so make sure you get your buffs up first before attacking.

• Master of Sparks: Spark now bounces up to 2 times, also is an AoE buff, granting the same buff to nearby allies. So if you have more melee characters, they can enjoy making Sparks fly everywhere too.
  
  
• Blitz: jump and gap close 2 enemies, dealing damage and proc multiple Sparks.
  
  
• Onslaught: attack 5 times at a target, proc multiple Sparks

• Peace of Mind: Critchance and Damage boost, replaces Enrage.
  
  
• Firebrand (optional): add Fire damage to your weapon, bonus is small so not worth running it alone for a non-LW character, better have it covered by your other synergy character.
  
  
• Cloak: hide and protect yourself from enemy.
  
  
• Flay Skin: -50% all elemental resistance on vulnerable target.
  
  
• Challenge: Mark an enemy, if the target dies within 2 turns then your character will receive bonus Armors and +20% Damage boost for a turn.