Talk:Tiamat/@comment-5002522-20170424212241/@comment-5151467-20170425161344

The number you roll isn't the dragon's level, it's for a chance to increase the dragon's current level by one, up to level 20. The die has 20 sides, yet there is an option to spend 5 gems to increase the result of the dice roll by one, when this happens, the range goes from [1-20] to [2-21], hence the reason for the "21" slot on the rewards board.