Poison Sting (4e Power)

Poison Sting	Dragonslayer Utility 1
As you pierce your enemies flesh like a scorpions tail, your weapon injects a lethal poison.
At-Will  Primal, Poison
No Action	Personal
Trigger: You make a basic melee attack.
Target: The enemy you hit.
Effect: You deal extra poison damage equal to your wisdom modifier. Level 21: You do 5 + your wisdom modifier poison damage.
Special: If the enemy chooses to attack you on its next turn, it takes the extra poison damage again.