Rients, as you all know, made carousing for XPs famous years ago, and it was universally acknowledged as the best idea since fermented grain juice. But I'm going to go screwing it up and add my own twist. Rather than an optional activity, carousing shall be mandatory to advance level, much like training was in certain versions of Big D.
Say your theurgist wants to upgrade to thaumaturgist. After acquiring the appropriate XPs, you're gonna need to party your face off for a number of days equal to the level you hope to achieve, and he or she must spend at least 100 GPs per level per day. That is, your aspiring thaumaturgist (4th level MU) will need to rock out for 4 days, dropping 400 quid
per day, minimum.
But the player doesn't just scratch the required gps off his or
her character sheet and call it good, no sirree. Rather, your daily expenditure is determined randomly by rolling a 20-sider and multiplying by 100 for each day. So it's quite possible that your almosturgist could drop the 1,600 bucks he allotted for raising level on day 1--if he rolls a 16--and still have 3 more days of partying to go. And lets say Brad--all thaumaturges are called Brad--rolls a 3 on day 2; that's only 300 GP spent, not enough to qualify for advancement so it does not count toward the total. He still has at least 3 more days and 1200 more GPs of partying to go before he 's done and he's already dropped 1,900 Deutschmarks! Poor bastard.
To make matters worse, once the bacchanalia is engaged, the player cedes all control over their character's spending until they have achieved the next rank. As
you can see it is entirely likely that the PCs will find
themselves in debt to a bevy of taverners, bail bondsmen, prostitutes,
bookies, tattoo artists, haberdashers, etc. and will be wanted by a retinue of
cops, con men, goons, and pimps.
They may very well be sent on a quest to satisfy some or part of this
debt, leaving behind a substantial collateral such as their most potent
magical items or a beloved henchperson. On the other hand, they may also find themselves suddenly in possession of several fabulous new suits, front row season tickets to the hippodrome, a menagerie of exotic animals, several acres of swampland, or even a new spouse.
Folks will notice that it is virtually impossible to spend enough money in a place like Hommlet to raise beyond 2nd or 3rd level. Of course, carousing in the V. of H. or that drab old Keep out on the borderlands is not going to build you much of a rep, so obviously you're going to have to go somewhere more cosmopolitan to ratchet yourself to the next level.
Beginning at name level, the PC has
to host an extravagant banquet in their stronghold including
tournaments, court jesters, and all the tiresome pageantry that goes with being a douchebag in a castle. Cost goes up to (Level + d20) x 1,000 rupees per day. Though the cost fluctuates on a day-to-day basis and is always gonna be a lot higher, the PC now has control of the length of the affair: a 13th level wannabe-lord can schedule his bar mitzvah to last exactly 13 days.