🗿 notawikiAcross the Obelisk Codex · the answer, not the article

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item  Equipment · Armor · Epic
Rarity EpicType ArmorKey stats Max HP +22. Heal done +1
Max HP +22. Heal done +1. [When you apply Regeneration] [8 times/turn] A random hero gains 1 Vitality.
Corrupted (purple) version
Max HP +32. Heal done +2. [When you apply Regeneration] [8 times/turn] A random hero gains 2 Vitality.