Feb 8th 2011 3:23PM Another advantage of frost is that you can use hungering cold to interrupt if everything is on cd and the mob isn't immune. You can even interrupt multiple targets if they're in range.
With the glyph it's zero RP cost.
May 24th 2009 2:50AM http://s238.photobucket.com/albums/ff157/m1k3yb/?action=view¤t=danielw_northernexposurerares.jpg&newest=1
link to the map from the OP