Weight of Khsar

Imbuing the weapon with the weight of the Scorpion god’s great body, waves of gravity ripple from its impact. Beware, the ground and sands beneath you don’t give out.

Each creature within a 20ft radius centered on you must make a Dexterity saving throw or take 4d8 force damage on a failed save and half as much damage on a success. The area is then difficult terrain, and you cannot move or be moved until your next turn.

At the start of your next turn, the area of difficult terrain ends, and another wave can be unleashed as a bonus action if concentration is maintained. The damage is decreased by 1d8, and the saving throw is the same for creatures within the radius. 

Weight of Time: Constructs and structures take double damage from this spell.

At Higher Levels: When casting this spell at 4th level and higher, the damage increases by 1d8 and the radius increases by 5ft for each slot level above 3rd