For the Trophies, see:

For related texts, see:

For other quest-specific Mnemosynes, see:

Lore

Mnemosynes are ancient receptacles of the knowledge of the old Dericost kingdom. Those that convert themselves into the undead slowly rot (except for His Eternal Splendor) and their mental faculties fail so storing memories like this is important to them. When Bael'Zharon returned, the undead wanted to safeguard their knowledge from the impending conflict. Two competing groups emerged in the hunt for mnemosynes: the Undead Hunters based in Tufa and the Archons of the Way which are found in a dungeon called the Mnemosyne Collection Site near Samsur. Mnemosynes come in three sizes ( Tiny, Small, and Large) and are found in the loot of almost all undead. An alternate way to obtain Mnemosynes is to gamble for them at the casinos.

Unlocking Mnemosynes

Locked Key Unlocked
A Tiny Mnemosyne + Intricate Wooden Key = An Unlocked Tiny Mnemosyne
A Small Mnemosyne + Intricate Copper Key = An Unlocked Small Mnemosyne
A Large Mnemosyne + Intricate Obsidian Key = An Unlocked Large Mnemosyne