Sorry if similar questions have been posted i tried to search but couldn't find anything that explained spell resistance to the point that im confused. i ply a level 18 sorcerer, to overcome sr do i roll a just a d20 and add my cl of 9 or do i get to add bab and such like i would for armor class?? up until this point our party has ignored sr all together as none of us wanted to mess with it, but the dm through a Nalfeshnee which has a base sr of 25, and its summoned by a level 17 antipaladin which gives it an additional 11+ paladin lvl which would make the Nalfeshnee have the ungodly sr of 49 so does that mean there is no way for me to hit it as if i just roll d20+9 a perfect would only be 29???