Wanda will report that she's seen this symbol before. Not in person, but in a blurry flash of an image, the symbol painted against a stone wall. She was in the Tertiary Settlement in Solvunn, tackling some corruption in a shrine in the woods. She 'battled' some dark shadows deep within the woods, needing to purify it to remove the corrupted aura and whatever was haunting a child in the Tertiary Settlement.