Artemis Revisited

Since no one's proposed a Prayer effect for Artemis, I've taken the liberty of adding one myself. Kevan assures me it's all right. I'm not so sure, but if you don't like it, CfJ it; I won't hate you.

Artemis' description is:
Artemis, the goddess of the moon and the hunt. A successful Prayer to Artemis between the hours of 6 PM and 6 AM GMT increases the Supplies of the praying Mariner's Ship by twice the Prayer Roll. Between the hours of 6 AM and 6 PM GMT the Prayer causes the praying Mariner to lose 5 Morale as an annoyed Artemis inflicts minor smitation upon him or her.