Collapsing Star

The spell cast a moat of energy which rapidly collapses into a collapsing star all creatures within a 30 radius must succeed a constitution saving throw or be pulled into the center of the radius and take 3d12 Fire, and 2d12 force, on a successful save only to take 2d12 force damage, and are not pulled into the collapsing star. 

when upcasted above 3rd level add d12 of damage