The Shroud of Darkness touches the slime and something happens. 
The noise stops.  The shaking stops.  The air solidifies.  Time has stopped
flowing.  Time and space are RIPPED open, a portal to the other-dimension is
opened The incarnation of evil is released. 
The steely voice bellows, 'YES!!!!!' 
As the spirit leaves his prison, something follows it through the portal.  A
small light. The small light catches the darkness.
A small female voice says, 'I don't think so.' 
The light and dark swirl.  The two spirit are refrozen in time, again, in the
form of a disc.
Congratulations! You have just completed Shrouds of darkness!
You receive 47765 gold as a reward for completing the quest.
You receive 8 training points.