So i have a question again. Google and search function gave me different answers, and i didnt found anything in the FAQ or Books to it.
When i Use a Staff with Use Magic Device, i first have to make a UMD check against a DC 20, like for a wand. But can I use UMD to emulate a higher INT or Casterlvl in conjunction with a Staff.
For example, i first roll for Using the Staff DC 20. Then i make a role to emulate a Class Feature (lvl in class then = roll - 20 according to SRD) and for that i role a 35, so my effective lvl would be 15. Then I emulate an ability Score, have a Lucky role and get a 40. My Emulated Ability score would now be roll - 15 = 25.
So would i cast a Spell from a Staff then with a casterlevel of 15 and an Int score of 25?