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That's odd, if I have no totems up and I try to use Totemic Call, I get this "whoosh" sound (the Nature spell failure sound) and red letters say "No available target" or something akin to this.
The easiest way to reproduce what they're talking about is to let your Fire Nova explode. After it's gone you'll still be able to Totemic Recall, but you'll get 0 mana from it.
If you run some of the better combat text mods (Mik's Scrolling Battle Text is what I use) you will be told exactly how much mana you're getting from Totemic Recall. ...or you could just check the combat log which I believe probably says something like "Axehilt has gained 0 mana from Totemic Recall."
Really the closest thing I've come to a "tricky" use of Totemic Recall is to recall Magma totem right before it does it's last pulse, given that it's a fairly high-cost totem. Even that I rarely use, since I'll generally have enough
other useful totems out to not want to get rid of all of them.