3rd annual offline tournament "Best of the best"

No worries! On the first day, I bought an elemental (it doesn't really matter which one... although, in a way, it does...). I bought it with 1 fairy.
Then, after it had done its job, it still had only 1 fairy! I clicked on the clock!... The next day, let's say it had 2000 mana points with that same fairy! (I think everyone can guess how this is possible). I want to fire it and buy it back! - It won't have that many anymore...