Fire Tempest is a Pyromancy in Dark Souls 2. To cast a Pyromancy, you must use a Flame or Special Weapons that can cast Pyromancy.
"An ancient, primal pyromancy.
Giant pillars of flame erupt near the caster.
The fire tempest incinerates all life.
What menace was so great as to make such a fearsome spell necessary?"
- Chest in Shrine of Amana at the edge of the map near the ogre.
- Rare drop from the dragons in Dragon Aerie.
Acid Surge ♦ Chaos Set ♦ Chaos Storm ♦ Combustion ♦ Dance of Fire ♦ Fire Orb ♦ Fire Seed ♦ Fire Snake ♦ Fire Storm ♦ Fireball ♦ Flame Swathe ♦ Flame Weapon ♦ Flames ♦ Flash Sweat ♦ Forbidden Sun ♦ Great Chaos Fireball ♦ Great Combustion ♦ Great Fireball ♦ Immolation ♦ Iron Flesh ♦ Lingering Flame ♦ Magic ♦ Outcry ♦ Poison Mist ♦ Pyromancies ♦ Toxic Mist ♦ Warmth