Melee weapon
Target: one creature
Attack: Strength vs. AC
Hit: "2[W] + Strength modifier damage, and you mark the target until the end of your next turn. If the target makes an attack before the end of your next turn that does not include you as a target, one ally adjacent to the target can make a basic attack against it as an immediate interrupt. If the ally's attack hits, the target takes a −2 penalty to the attack roll."
Interrupting strike is a 3rd-level warlord encounter attack power. On a hit, it damages and marks the target, then grants a basic attack to an adjacent ally if the target violates the mark.[Dr384:51]
Interrupting strike was introduced in "Class Acts: Warlord: Keys to the Battlefield" by Robert J. Schwalb in Dragon #384.
CharOp Evaluation: Poor [Char-op Warlord]
This is a reoccurring problem with many Warlord Powers: it grants a mark, which Warlords have no way to enforce, meaning this is a swing that could potentially have zero additional effect. It gets worse when you consider what happens if it does work: You get attacked. You're a Leader, not a Defender. You don't have the defenses or HP to encourage getting attacked. This feels like a Fighter power that got lost. Do not recommend.