Heir to Fire Throat, fire mage.

AshingValir's skills apply a stack of Ablaze to enemies hit, dealing them Magic Damage equal to 1 (+0.2% Total Magic Power)% of their Max HP per second for 3s. At 3 stacks, the fire detonates, dealing Magic Damage equal to 5 (+1% Total Magic Power)% of the target's Max HP to the enemy and stunning them for 1s (the same target can only be stunned by Valir's skills once every 7s.)
Valir excels in both sustained damage and Crowd Control. He counters heroes lacking mobility like Balmond and Fredrinn.
Valir is countered by agile Assassins like Lancelot and Fanny because they can easily evade his 1st Skill.