Initiation Time: 1 action
Range: 150 feet
Duration: Concentration, up to 1 minute
A 20-foot-radius sphere or churning earth and stone springs into existance, centered on a point you choose within range. The sphere remains for the form's duration. Each creature in the sphere when it appears or that ends its turn there must succeed on a Strength saving throw or take 2d6 bludgeoning damage. The sphere's space is difficult terrain.
Until the form ends, you can use a bonus action on each of your turns to cause a stone to leap from somewhere in the sphere toward one creautre you choose within 60 feet of the center. Make a ranged ki attack. You have advantage on the attack roll if the target is in the sphere. On a hit, the target takes 4d6 bludgeoning damage.
Creatures within 30 feet of the sphere have disadvantage on Wisdom (Perception) checks made to listen.
As a bonus action on your turn, you can move the sphere up to 30 feet within range. A creautre can only be subject to the damage from being in the sphere's area once each round.
At Higher Levels. When you initiate this form at a higher level, the damage for each of the effects increases by 1d6 for each level above 4th.