Shadow Snake Lunge
Swordmage Attack 3
Like the shadow snake, your strike bites with deadly venom. With each movement, your foe suffers from the poison you inflict.
Melee weapon
Target: One creature
Attack: Intelligence vs. AC
Hit: 2[W] + Intelligence modifier damage. Until the end of your next turn, when the target uses a move action, it takes poison damage equal to your Constitution modifier.
Shadow Snake Lunge is an encounter power available to swordmages at 3rd level.[AP:53]