Being the core of the dungeon, the underground space obeys your will and is built as a complex system of tunnels and corridors in which intruders get lost and find traps.
The primary concern is your safety, but...
Your dungeon is different from many others. Instead of dangerously deadly monsters, tons of killer traps, and constant danger to the lives of adventurers... you deliberately let the interlopers come as deep as possible.
To catch them. To play with them. Just to relieve boredom.
Like this time: An elf girl groping her way along a stone wall with a torch in her hands, she touches a brick in the wall, which was the activator of the trap.
Adventurer: "What?!" She screamed before falling.
The floor disappears beneath her and she falls into her hands on the cords. These hands rip off her clothes and drag her towards the X post, where they lock her. The poor blonde elf is now naked and trapped, and in front of her face, hands are waving a feather, teasing and showing her fate.