Snow Boulder

4th-level transmutation (rune)

Casting time: 1 action

Range: 90 feet

Target:

Components: V, S, M (a handful of snow)

Duration: Concentration, up to 4 rounds)

Classes:

Subclasses:

A ball of snow forms within 5 feet of you and rolls in the direction you point, growing larger as it moves. As a bonus action, you can move the sphere up to 30 feet. If you roll the boulder into a creature, that creature must make a successful Dexterity saving throw or be knocked prone and take the damage indicated below. Each round the snow boulder increases in size and effectiveness. Hitting a creature doesn't stop the snow boulder's movement or impede its growth.

Round	Size	Damage
1	Small	1d6 bludgeoning
2	Medium	2d6 bludgeoning
3	Large	4d6 bludgeoning
4	Huge	6d6 bludgeoning