Deals 12 Fire Damage and an additional 6 Flame Damage over 4.5 seconds. Snares 40% for 4.5 seconds.
- Requires 1 skill point.
- Deals increased damage over time.
- Update 9: Increased the damage over time duration for this morph to 9 seconds from 7 seconds.
- Affects multiple targets
- Update 3: The tooltip for this ability now includes the damage-over-time.
- Update 5: Fixed an issue where this ability was applying two snares to secondary targets.
- Update 7: Fixed an issue where this ability was not always hitting the targeted enemy.
- Update 2: This ability's damage-over-time now lasts 1 additional second, and deals 10% more damage.
- Update 3: Fixed an issue where casting Sun Fire wouldn't cause you to face your target.
- Update 5: Fixed an issue where the Sun Fire snare duration wasn't being increased by the Enduring Rays passive 
- Update 6: Increased the damage over time dealt by Sun Fire and its morphs by 30%.
- Update 6: While Sun Fire is active on a target, the caster will gain the Major Spell Crit buff.
- Update 7: Increased the travel speed of this ability.
- Update 9: The passive ability, Enduring Rays, now only increases the duration of the Sun Fire, Eclipse, and Nova abilities.