Only actually good if you have the 4x AB debuff, as that boosts arcane damage (but also costs more). If they don't have the debuff, blizzard is better (in Yorsahj, they should be targeting a focused enemy (preferably theirs) and be exploding. If they've talented into the shorter duration, it's 4x AB, 4x AE, AB, 4x AE, etc until there are less than 4 mobs.
XI Wiki



