It's the Thieve's Guild patch that allowed mudcrabs to detect you. Before that they couldn't.
٩(͡๏̯͡๏)۶
"I am a nightblade. Blending the disciplines of the stealthy agent and subtle wizard, I move unseen and undetected, foil locks and traps, and teleport to safety when threatened, or strike like a viper from ambush. The College of Illusion hides me and fuddles or pacifies my opponents. The College of Mysticism detects my object, reflects and dispels enemy spells, and makes good my escape. The key to a nightblade's success is avoidance, by spell or by stealth; with these skills, all things are possible."
I'm just guessing here. Are there crabs in Cyro? lol
Yes, there are
٩(͡๏̯͡๏)۶
"I am a nightblade. Blending the disciplines of the stealthy agent and subtle wizard, I move unseen and undetected, foil locks and traps, and teleport to safety when threatened, or strike like a viper from ambush. The College of Illusion hides me and fuddles or pacifies my opponents. The College of Mysticism detects my object, reflects and dispels enemy spells, and makes good my escape. The key to a nightblade's success is avoidance, by spell or by stealth; with these skills, all things are possible."