Indeed...
Perhaps the ritual did succeed and made Qublu go get some hot coffee, but that isn't a dark intention (I'm pretty sure Qublu enjoyed the coffee)... or perhaps I inhaled some essence and imagined that there were patterns on the floor (because there usually aren't any holes in the walls)...
Either way, this is conclusive evidence that Dark Rituals do not exist. All things related to Margrel was a clever ruse by OOO and P2W people pulled them Black Kat Cowls out of their shiny-black top hats.
The End~
I'm still angry.