Boulder Toss

A roughly 10 foot cube boulder is pulled from the ground leaving a pit the size of the boulder.

You can choose to set the boulder down gently or to launch it somewhere within range. If you choose to lob the boulder all creatures in the area of where it lands must make a dexterity saving throw. On a failed save the creature takes 5d12 bludgeoning damage and is knocked prone.

Creatures sizes Huge or Gargantuan are can't become prone due to this spell  unless it is cast at a higher level.

At Higher Levels:  Damage increases by 1d12 and the size of the boulder increases by 5 feet in all dimensions.