House Rule: (to make things easier on GMs)
When an item or effect does not define a save DC, the GM just needs to make a call on whether the save is Easy, Normal, Hard, etc.
The same can be used for Skill check DCs, just decide how hard the task should be. Generally a lot easier than looking up a billion tables of modifiers.
This makes challenges fairly consistent across levels. Something “Hard” is hard for both a 1st level and a 15th level character. While high-level characters might be supernaturally good at many things, some things are just plain difficult for mortals, regardless of level.
|Simple||5 + character level|
|Easy||10 + character level|
|Normal||15 + character level|
|Hard||20 + character level|
|Very Hard||25 + character level|
|Impossible||30 + character level|
Note: We used this fairly extensively in the Thirty Pieces of Silver campaign with good results.