When you defeat her the first time, she will switch from Fire to Frost. The second time she goes from Frost to Lightning.
Flame Burst - Launches a narrow wave of fire in front of herself.
Fireball - Creates and lobs a fireball at her target.
Fire Runes - Runes appear on the ground. They are surrounded by flames for their duration.
Frost Wave - Burst attack in front of her. Chance to freeze those caught in it.
Frostbolt - Lobs a bolt of ice at her target.
Ice Barrier - Create a barrier of ice in front of herself. It will protect her from attacks coming in that direction.
Lighting Burst - a short range AoE burst focused around her. Chance to stun those caught in it.
Lightning Bolt - A quick directed strike of lighting at the target.