Strength: Opposing a force that would physically move or bind you.That said, if you don't want to take the time to look up the specific spell or attack causing the effect, or you're in a scenario where a save should occur but the type isn't specified, there is a general rule of thumb. The Saving Throws table offers suggestions. It's up to you to decide which ability score is Other times, a situation arises that clearly calls for a saving throw, especially when a character is subjected to a harmful effect that can't be hedged out by armor or a shield. Most of the time, a saving throw comes into play when an effect - such as a spell, monster ability, or trap - calls for it, telling you what kind of saving throw is involved and providing a DC for it. There are multiple ways to be stunned, some of them require Constitution saves (Monk's Stunning Strike) while others may require Charisma saves (Divine Word). In general, you should base the saving throw to be used off of what is causing the effect rather than the effect itself.