Great Boon of Gravity

Gravity Pulse. Once per short rest, as an action, you can emit a tremor of gravitational energy to shift the positions of your foes. All creatures not behind full cover within 60 feet of you must make a Strength saving throw (DC 8 + PB + INT), taking 3d8 force damage and being shunted 20 feet toward the nearest position exactly 30 feet away from you on a failed save, or half as much damage on a success. If a creature moved by this pulse is moved through the space of another creature, the second creature falls prone.