Actually, imp, are a lower level demon and natural spirit (meaning fay class) so their almost good used as a familiar for daily use or tricks. They like to do pranks but never harmful. As lower creatures, they well listen, fear, respect, and follow those how are stronger. Basically, to call for one to be you ally is almost the some as calling a fairy.
ok. might anyone else know any spells to conjure one? some of the conjuring spells are full of fluff. also, please stop telling me that there mischeviuse and tricksters, i know this very well and i can certainly handle it.