Watchful Strike
Swordmage Attack 7
As you strike your foe, you place another foe under your aegis.
Melee weapon
Target: One creature
Attack: Intelligence vs. AC
Hit: 2[W] + Intelligence modifier damage. One enemy within 5 squares of you other than the target is marked until the end of your next turn
Aegis of Assault: The enemy you mark is marked by your aegis of assault and takes damage equal to your Strength modifier.
Watchful Strike is an encounter power available to swordmages at 7th level.[AP:56]