Quick and easy question. Are the save DCs for scrolls based on the minimum required to cast the spell, or is it based on the person using the scroll?
Magic items produce spells or spell-like effects. For a saving throw against a spell or spell-like effect from a magic item, the DC is 10 + the level of the spell or effect + the ability modifier of the minimum ability score needed to cast that level of spell.
All items use DCs based on minimum requirements unless noted otherwise (staves are most obvious example of such exception).