Get the Casino Card from the Durandal's Casino (north and east of Shione's room 
on the Durandal). Then, play Poker. Start with 100 coins (900 bucks) and play 
level 1 until you get about 200. Then, move straight to level 3 until you get 
about 700. Then, play level 4. The way to always beat the house is as follows. 
Always hold a pair or any other scoring combo. After you win, always do double 
or nothing. If the number is greater than 7 bet low, if the number is 8 it is 
your choice, and if the number is 9 or above it is best to go low. After accumulating 
about 45000 coins, get 99 starter decks of cards and sell them for 20,000. It takes 
a total of two hours to make about 100,000 (and all the prizes and art.)