It can be used 5 times a day (12 times a day for VIP members) by throwing in lucky coins, which are upgrade from Ancient Coins for 15 silver. The first time costs 3 coins, the second 6, the third 9, the fourth 12 and the fifth 15.
After Receiving a certain amount of Title Cache Shards you can turn them in to the well to receive a title, which can be upgraded when a certain number of shards is reached. Check our Achievements page for a list of titles.
A random amount of prizes are received each time, tosing more coins does not necessarily mean more prizes. Prizes include: