Story and voice acting.

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Another reference – Jolly Raven in the final mission of Sandor’s campaign. This was the name of a pirate ship whose wreckage needs to be found at the behest of Lord Ironfist in Might and Magic 1.

The Griffonheart Blade is a family heirloom of the Griffonhart dynasty, rulers of Erathia. It appears in Heroes 4.