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<blockquote data-quote="Stalker0" data-source="post: 8755280" data-attributes="member: 5889">When I did a lot of math on the 4e skill challenge system (and eventually in developing my own Obsidian Skill Challenge system), one thing I learned is, the more successes you have in a given challenge, the more &quot;unstable&quot; it becomes.Sake of argument (and these aren't the actual numbers I'd have to recalculate them, but just for an example). Lets say a group has a 50% chance to accomplish a 3 success challenge. If you were to lower the DC by 1 lets say, that might improve their odds by 10% (so 60%). Meanwhile for a 7 success challenge, it could be 20% (ie 70% total chance to win).Likewise, any bonuses or penalties a group has are magnified the more successes the given challenge requires. It can make it difficult to eyeball a standard DC, as even small changes can have massive impacts.It is the very reason I limited all of my Obsidian challenges to a 3 success system; otherwise, it becomes difficult to provide a consistent level of difficulty.I recognize that you are combining this with a concept that large skill check results can lead to multiple successes, so I'm not really sure how that affects things (my intuition is, it will make it even swingier), but just to give that bit of fair warning from my practical experiences.</blockquote>

[QUOTE="Stalker0, post: 8755280, member: 5889"] When I did a lot of math on the 4e skill challenge system (and eventually in developing my own Obsidian Skill Challenge system), one thing I learned is, the more successes you have in a given challenge, the more "unstable" it becomes. Sake of argument (and these aren't the actual numbers I'd have to recalculate them, but just for an example). Lets say a group has a 50% chance to accomplish a 3 success challenge. If you were to lower the DC by 1 lets say, that might improve their odds by 10% (so 60%). Meanwhile for a 7 success challenge, it could be 20% (ie 70% total chance to win). Likewise, any bonuses or penalties a group has are magnified the more successes the given challenge requires. It can make it difficult to eyeball a standard DC, as even small changes can have massive impacts. It is the very reason I limited all of my Obsidian challenges to a 3 success system; otherwise, it becomes difficult to provide a consistent level of difficulty. I recognize that you are combining this with a concept that large skill check results can lead to multiple successes, so I'm not really sure how that affects things (my intuition is, it will make it even swingier), but just to give that bit of fair warning from my practical experiences. [/QUOTE]

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