Anytime a player engages in an act of pure evil there is a chance that the Most Unholy Grail will appear. It will manifest itself in an appropriately impressive hellish manner, floating up from a fissure in the ground, in a puff of acrid green smoke or simply being spontaneously generated from maggots or desiccated entrails.
It is always filled with thick dark red blood and anyone may drink.
A sip from the Most Unholy Grail will instantly heal all lost PHP, PEP or MERP. A full swig does the above and adds 1d3 to any attribute for one Gar-nuta. A full healthy drink does all of the above and adds 1d3+2 to any attribute for 1 full OTU. Ah, but enterprising players will ask what is the cost? Tell the player in question that you have rolled 2d100 (for a value of 2 to 200). Each drink reduces this value and if zero is reached the cup will simply disappear.
And this is mostly true. Do not tell them that a sip reduces the number by 1d6, a swig by 2d6 and a drink by 4d6. When zero is reached, the cup does in fact disappear. The person who drank their score down to zero will in 1d4 four days discover two bumps on the top of their head. 3d6 days later full sized horns (resembling those of the cup) will be fully formed. At this point the demonic aura of the persona will attract Sleemays (1% cumulative rolled per day) that will attempt to capture the player and take them to Sleemania and convert them into a lessor Sleemay servitor.
The Most Unholy Grail can only be damaged through the greatest effort. Perhaps you may “accidentally” leave it behind or even throw into the deepest sea to lessen the temptation to partake of its power. If no one has drunk from the MUG it simply reappears within 24 hours. If gotten rid of a second time (and no one partakes of it’s benefits) it has a 50% of reappearing again within 24 hours. This drops 10% every 24 hours, until zero is reached and the MUG stays gone. However, if at any time someone has taken a drink from the MUG during this process the percentage chance of it reappearing becomes 100%. It reappears among the possessions of the player who drank. It can only be gotten rid of by not drinking from it, using the formula, above. Only at this point it is gone forever.
Or is it?