Level 10 is required to obtain the Grandmaster title, and level 20 is the maximum. Each level grants a +5% bonus to potion strength.
The system goes bankrupt if a million accumulates in the account, so if you deposit 800k, you'll need to withdraw the interest every few days. This surprise was introduced when I noticed that some players tend to hoard.
Thank you for your diligent oversight of the construction; I will fix this error.
Thank you very much!
Here are a couple more questions:
1) How do I retrieve the Sword in the Stone? (the one located near the Foothills Palace and the Pyramid)
2) How many unique plants are needed for the Faculty of Biology?