From StrategyWiki, the free strategy guide and walkthrough wiki

Morning stars have moderate damage and length but they are hard to defend with, giving -2 penalty to Defence. They get +1 to Attack though and receive a bonus when attacking units with shields.

[edit] Magic Morningstars

These are some of the magical morningstars that can be forged.

• Star of Heroes, this mighty weapon destroys armor
• Evening Star, anyone struck by this morningstar will be affected by weakness and flames