Energy Regeneration + Attack Damage + Spell Drain = Absorptive Hunger
After casting a spell your next automatic attack will leave a debuff behind on all enemies near the primary target while you drain with your Spell Drain Value. The debuff deals 10 + (Attack Damage Value) damage per second over (Energy Regeneration Value) seconds. The debuff can stack up to 5 times.
Attack Damage increases the damage. Energy Regeneration increases the duration.