Plague of Locusts
Druid Attack 7
With a gesture, you cause locusts to descend on your foes.
Ranged 5
Target: One, two, or three creatures
Attack: Wisdom vs. Fortitude
Hit: 1d6 + Wisdom modifier poison damage, and the target grants combat advantage until the end of your next turn.
Primal Swarm: The attack deals extra poison damage equal to your Constitution damage.
Plague of Locusts is a 7th level Druid encounter power. On a hit it poisons the target. [PrP:43]