Talk:Buildings/@comment-186.144.162.117-20140408195214/@comment-24088226-20140408200930

You need BP to encounter and kill AW. You don't necessarily need an additional +20% attack and defense from the extra elemental buildings you get from Castle level 10 to kill AW. Also, it takes a lot of time and resources to construct the extra buildings from the castle upgrade before you start to get any benefit from it. While the Castle 10 upgrade is nice, Yggdrasil and the Magic School level 6 upgrades take priority.