Tremors
Druid Attack 19
You command the earth, causing tremors to topple your foes.
Area burst 2 within 10 squares
Target: Each creature in burst
Attack: Wisdom vs. Reflex
Hit: 4d6 + Wisdom modifier damage, and the primary target is knocked prone.
Miss: Half damage
Effect: The burst creates a quaking zone that lasts until the end of the encounter. The zone is difficult terrain. While the zone persists, you can make the following secondary attack as a minor action once per round.
Secondary Target: Each creature within the zone
Secondary Attack: Wisdom vs. Reflex