The Heart of the Calamity

is a level 77 in .
==Overview==
 is a in which the is given 25 minutes to defeat six one by one. They are , , , , , and . They appear in that order, and only after the before them is defeated. When is defeated, the ends. 
The can be cleared using any , and also without using any . After completing the for the first time, the receives a reward of an , ten , two , 700 , and a random .
==Nomenclature==