Termination threat
rogue attack 1
Melee weapon
Requirement: wielding a light blade
Target: one creature
Attack: Dexterity vs. AC
Hit: "1[W] + Dexterity modifier + Charisma modifier damage.
"Ruthless Ruffian: If the target is already taking the attack penalty from one of your rattling attacks, the target is also immobilized until the end of your next turn."[MP:74]
Termination threat is an encounter power available to rogues at 1st level.
Termination threat is a rattling power, so if the user is trained in Intimidate, and the target is damaged by the power and not immune to fear, the target takes a −2 penalty to attack rolls until the end of the user's next turn.