All I’ve learned is that no matter how many times you attempt to summon a demon, it’s usually a dud reject demon who can only do stupid stuff like carve a pumpkin really fast or make a squirrel dance.
One time, one of the more powerful demons did kill someone who accidentally crossed the summoning barrier in a really hilarious manner (turned him into a fly and fly swatter and made him swat himself, sorry Dan’s wife!) but other than that, the whole demon summoning thing is a total bust.
I think that fly swatter gag demon might have been Alex Trebek, before. He made us phrase our pitiful begging to avoid eternal damnation in the form of a question.
Anyway, demon summoning: harsh truth is you should avoid.