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Twisting vines
druid attack 1

area burst 1 within 10 squares

Target: each creature within the burst

Attack: Wisdom vs. Reflex

Hit: 1d8 + Wisdom modifier damage. Each square adjacent to the target becomes difficult terrain until the end of the user's next turn.

Twisting vines is a 1st-level druid encounter attack power. Each creature within its burst takes damage if hit. In addition, squares adjacent to creatures hit by twisting vines become difficult terrain for a round.[PH2:85]