I am pretty sure you took this idea from Riftshadow. I personally disliked it for a number of reasons. The first being if you failed you won't know for three rounds if you need to recast it or not. Warriors have plenty of ways to lag an opponent you may not be able to get a command in until gushing and by then three rounds against a berserker you could very likely be dead. The game has been balanced a lot lately with the limiting of wands and the changes to shifters. I just brought up shifters because of the post lower in the thread. Air majors have been weakened quite a bit if you know how to combat them.