You launch many arrows, causing a black cloud of them to fall on your foes and litter the ground with broken shafts and razorsharp barbs.

Daily   ✦     Primal, Weapon
Standard Action      Area burst 3 within weapon range

Target: Each creature in the burst

Attack: Wisdom vs. AC

Hit: 2[W] + Wisdom modifier damage. If the target is flying, it falls prone.

Effect: The burst creates a zone of difficult terrain that lasts until the end of the encounter. Any creature takes 5 damage when it enters the zone on its turn. A creature can take this damage only once per turn.

Update (2/17/2012)
Changed in December 2011 updates.

Published in Player's Handbook 3, page(s) 131.