Actually, only Ray of Frost and Icy Terrain can Freeze people. All the other cold powers just add stacks. Having Frozen Targets count as being at 6 stacks would make sense though.
An incredibly vital thing to this game's pvp is to back cap. Both maps have a long route around them that can let you walk over most of the fighting and sneak into the opponents base. In many cases, you'll cap a point, and can then rejoin the rest of the fight. In other cases, one or two enemies will see you, and will…