Mystic Heron's Discipline

2 pieces: (2) Set: Breath of Fire deals 40% bonus damage as Shadowflame and causes you to heal for 50% of your Fire damage dealt.

4 pieces: (4) Set: Your attacks against targets afflicted by Breath of Fire have a chance to deal 15% extra damage as Shadowflame, and each Celestial Brew also grants a Stagger absorb for 100% of the Shadowflame damage you have dealt, causing damage delayed by Stagger to instead be prevented.