To get unlimited oracilcum an (an item needed to synthesize ultima weapon) u need the velcy vendors to find them..
first go to halloween town, candy cane lane, the the hertls will disappear so use reaction command spin on the merry go around thing
in bazzar, agabah just keep destroying th stores. in the beast's castle west wing just keep destroying the armor suit. in the coliseum cave of the dead use magnet and in the land of dragons checkpoint destroy the fire works. Go back to the top until u get the oracilcum