Health Regeneration + Attack Damage + Spell Damage = Flameshroud
After each spell you're shrouded in flames dealing 15 + (Attack Damage Value) damage per second for 2 + (Health Regeneration Value) seconds to nearby enemies. For each enemy damaged this way your health regeneration is increased by 0.25 * (1 + Spell Damage Value) for as long you have the flameshroud.
Health Regeneration improves the duration. Attack Damage inproves the damage. Spell Damage increases the health regeneration.