what if a - the crystals of light/darkness and their affinity can allow one to manipulate the primal corrosponding with it, or like shiva/thordan a wod has transformed to titan and is tossing rocks at the kobolds? Either or perhaps has sealed the primal within the crystal of dark/light and released it. To me it looks like they kill a primal and steal its essence with the crystals outstretched. The big speech "you know our motives, were not gonna stop, you know what the stakes are, looks like they cleared ifrit too..