A single target frost bolt spell
This is the second phase and all of her spells change. She now starts hitting players with a multi target frost bolt, and hits the Jade Dynasty Gold tank with a single target frost bolt spell. In addition she will stack a debuff on the tank that lowers threat by 20% per stack. This means that at least two tanks will need to trade agro back and forth every 3rd stack so that they can stay ahead of the DPS.
