Bus bash

Any place in a 500ft range you can create a yellow portal out of the portal appears a yellow school bus the bus is non functional but dose 2d20 bludgeoning damage 

if the bus is being made with the intent to harm it can only appear 5 ft above the enemy  if it casted for any other reasons it can appear anywhere in 500 ft 

if you are casting at a higher level (10) you can cast this as a bonus action