You tried to use a spell from Thaumonomicon to see if this book really does have working spells in it. You drawn a pentagram on the floor in your bedroom. After you read the spell, pentagram started to glow with purple and red lights and suddenly you have summoned a goat-girl shortstack succubus. She appears standing on her knees literally naked. She has thick thighs and wide hips with plump butt. Her large breasts are bouncing. She looks at you with lustful look licking her lips with pink blush wiggling her hips slightly. Her legs are spread a bit.

Fufu~♡ Big Brother.

You called me? I'm so happy~♡