Sun Fire is a skill located in the Dawn's Wrath (which can be found in the Templar skill tree). Sun Fire is a base skill, and can be morphed into Vampire's Bane
or Reflective Light
Sun Fire deals the following types of damage: Flame Damage. Which means that it gets buffed by the following blue champion point trees: Elemental Expert, Elf Born, Master at Arms, Spell Erosion, Thaumaturge. Also the following red champion point trees protect against this skill: Elemental Defender, Iron Clad, Thick Skinned.