If you mean the automated effects, like taking damage, etc, there are only 2 that I know of: taking damage and healing. I have it detailed in the C&C 3.0 Functional Spec document, I think.
I would be quite happy with descriptive effects that expire:
Effect Name (eg Bless) Impact (+1 xyz) Duration (10rounds)
Then when the players turn comes round we can see them and manually apply them...