Wondering how this thing could possibly be used. Surely, a regular Frenzy spell is so much easier to use. Cast it, watch the fight, and whatever else. A rune? You'd have to lay it down, attract enemies over to it, and it just seems a bit redundant. Can anyone enlighten me as to the possible uses of this spell?

Rune is stronger, with it you can almost enrage anyone, dualcasted mind you. Turn invisible, lay rune, use that throw voice shout and dit back

At level 67, dual casting Frenzy with the perks that affect it works on nearly anything. Rarely does it fail me, plus I can use it from a long distance.