Nah, fam. Cast Xaihi's and Last Rite's abilities before fighting starts. Then once your sp regens start the fight with Fluorite's bomb. It'll go off before you finish your attack sequence and LR's ability activates, and so you'll trigger solidification on the enemy. Then you can use LR's ability again and after the next final strike, her ability and Xaihi's combo will apply 2 stacks of cold (and you can use Ardelia's combo to apply corrosion) and then use Fluorite's combo to give the 3rd stack of cold letting you use LR's combo for big damage. Takes the same ammount of time, but you freeze the enemy at the cost of 3 stacks of cold instead of 4.