Indeed, and if you have glyphed your thunderstorm to not do knockback, you'll want to have it in there somewhere on your aoe button if you do use one (i do), but I don't use chain lightning on my pure aoe button.
however, since fire totems are stationary unless replaced, I'm not sure i'd use the mana heavy magma totem for it if I'll be moving around while spamming my aoe button. I'll have to think of a clever solution to this. (generally like having totem of wrath down anyway to boost the aoe of my other characters)