For the item in Fate of The Gods, see Mah memory.
Elder memory detail

Elder memories are divine memories obtained from harvesting elder wisps. They can be converted into elder energy or experience. If it is converted to energy, then a variable amount of energy can be gained. When converting to experience without using energy, 33.5 experience is gained. If 5 elder energy is used during conversion, 41.8 experience is gained. If a Boon of elder energy has been acquired then an additional 10% will be added to experience conversions.

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