A small disc made of bone – probably whalebone – carved on one side with tiny stars and on the other with a Viking longship, with the sail up and oars out between a row of shields. The medallion was given to Arthur by Tom, the Mariner, and guarantees the assistance of the Mariner on 3 occasions. However, this assistance always seems to take a long time to arrive, but it always seems to arrive at just the right time. Leaf has used the medallion on one ocassion.

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