TODO / Need more information (TBC spells)

Warlock: Soul Shatter. Combat log line? "You gain Soul Shatter" or "You perform Soul Shatter" or "You cast Soul Shatter" ? I suppose we can just check for unit spellcast succeeded instead.

Hunter: misdirection. combat log line? "you cast misdirection on x." ?

Mage: Invisibility. Is it a stacking buff, once per second? Or will the one second ticks happen silently? Also, does it remove threat arithmetically or geometrically?

Shaman: Nature's Guardian. Comat log line? "You cast nature's guardian on x" ?