The water-girl getting a default-victory just because there's rain was stupid. If it was that easy ... and then why didn't the guy win, when he can literally manipulate the earth that's everywhere?
Was also stupid how Denken and the guy literally claimed to have ZERO mana left. Come on, you never looked like you were that exhausted, there should be enough mana left to overpower that loser group at the end.
I'm liking this anime now quite some, but what overall ruins it for me is everyone's lack of emotion. It's like everyone is suffering from depression combined with Bleach-syndrome (making a cool/smug facial expression until you lose).
Bummer Fern didn't use the see-through-spell on her team mate ;>