Strength through adversity.
The Seraph Shield Evolution is manufactured by Anshin and comes from the Borderlands 2 Pirate's Booty - DLC.
Default Health Regen is ≈0,083% / sec. (of users max health), but is increased to ≈3.5% / sec. when the player takes damage from enemies.
Health Regeneration and Elemental Resistance is lost upon Shield Depletion.
Evolution's Drop-Rates and all Sources:
3 Epics count as legendary ingredients and may come as a result: Deadly Bloom, Supernova, Cryo Spike