Oar of Lost Memories

This gnarled oar, crafted from a dark, shadowy wood, resonates with the memories of those it has ferried. While attuned to the Oar of Lost Memories, the wielder gains a swim speed of 30 feet and can cast the spell Fog Cloud once per long rest, creating a thick fog that obscures vision and allows for strategic maneuvering on water. Additionally, the wielder can use an action to touch a creature with the oar, forcing the target to succeed on a DC 15 Wisdom saving throw or have their most recent memory of the past 24 hours erased. The memories are absorbed into the oar, providing the wielder advantage on Intelligence (History) checks related to people or events they have encountered since attuning to the oar.