Summoners War - Rune - Immemorial
Immemorial is a Special Rune type item that can be obtain randomly in the Tartatus Labyrinth - Guild when defeating a Labyrinth boss. It exist 2 different Immemorial, the [Immemorial Grindstones] and [Immemorial Gems]. Similar to Grindstones and Enchanted Gems, the Immemorial Rune are different because they doesn't come with a Rune Set attached to them! They can be used on any Rune Set we what! Immemorial Grindstones are used to increase the value of Sub-Stat on a Rune. Immemorial Gems are used to replace the Sub-Stat on a Rune.
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