Stuff like Shuyin (6-112H) and Ninja (8-124C) only gave you control of the Forward until the end of the turn. The developers seemed a bit wary of making it too easy to snatch your opponent's Forwards, which is understandable because it's a really strong effect. S tealing a card from your opponent's side of the field, aka 'Mind control' is an effect that we've seen only a few times before, and never in a way that's made a particularly big splash, if you'll pardon the pun. Water also wins the award for some of the most unique and interesting cards in Opus XIV as well.