Rule 6

Rule 6: Learn your class/race/feats/etc.
Casters need to know what the saves for their spells are (typically 10 + spell level + ability modifier), as well as the effects, range, etc. All players need to know what their bonus to hit is. I will not remind you anymore. Also, I am not responsible for you forgetting what your class features are. If you forgot that your character get such and such bonus that would have let your last attack hit, then too bad. You didn't remember then. Maybe you will remember next time.