Unbind the Bound Fury and the Bound Vortex.
There are two very powerful elementals that the Twilight's Hammer have bound. They are using the bound Fury and Vortex to infuse Animus with a great deal of power.
When Animus has absorbed enough of their power, he will explode. The rest of Thousand Needles and much of the surrounding lands, will be obliterated.