You will be able to select from five different point amounts that you would like to expend at once, and the reward will vary depending on the amount selected. It is possible that spending large amounts of points at once can increase the chances of acquiring rare items. For instance, selecting Dial 5 (50 points) transformed the Treasure Coffer into a Gold Sturdy Pyxis before rewarding an item. After declining to continue spending points, the chest reverted to the Blue Treasure Coffer.
When you get a "High Quality" item, such as Jug of Monkey Wine, appears over his head.
Dials 1-5 all cost 10 points, and there is a new special dial that costs 50 points. The special dial may be selected once per day (Earth time) and resets twenty-four hours after use.
In general, it appears that just about everything that does not have an upgrade path in the Magian Trials is a potential drop. It is extremely unlikely that Relic, Mythic, Empyrean, or Ergon weapons are potential drops due to them being deliberate time-sinks. Same for 10,000 piece Dynamis currency, Cat's Eye, Balrahn's Eyepatch, et
During the Adoulin Dial Campaign a special Adoulin Dial will be available from the Gobbie Mystery Box this Dial can be used once per real life day (Resetting at Japan midnight) and costs no points to use
You can ask the Goblin to take a peek at possible rewards and he will tell you 3 items you have a chance of getting. Food, medicine and synthesis materials normally are the first two listed, and a Scroll or NM pop item as the third.
What you are told depends primarily on the game day, (see Talk page for details).
It is unknown at this time how exactly this relates to the actual chances of getting any particular item.
appears over his head. 
