The gong sounds used for attack notices for the magic faction are all 
from http://www.freesound.org.

gong1 is by 'Rodcencko'
http://www.freesound.org/samplesViewSingle.php?id=16594

gong2 is by 'gezortenplotz'
http://www.freesound.org/samplesViewSingle.php?id=20134

gong3 id by 'SuperDaveOsbourne'
http://www.freesound.org/samplesViewSingle.php?id=63643
