Key Support Gems to Enhance the Combo:
Spell Cascade: Makes Flame Wall hit multiple areas, which means Spark will fire through multiple walls and add more fire damage. This is extremely useful for clearing large packs of Path of exile currency enemies.

Fortress: Turns Flame Wall into a circle instead of a line, which increases the area covered and boosts the number of Spark projectiles that pass through it. This is great for hitting enemies from multiple angles.

Inspiration: Helps offset the high mana cost of Path of exile currency for sale this setup, allowing you to cast more Flame Walls and Sparks without running out of mana.

Acceleration: Increases Spark’s projectile speed, ensuring your projectiles hit the Flame Wall more consistently, especially in high-mobility fights.