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Ringing the Bell
Ranger Attack 19

You come up behind your enemy and drive your weapon against its head, leaving it senseless.

Melee weapon

Target: One creatuer

Attack: Strength vs. AC

Hit: 3[W] + Strength modifier damage, and ongoing 5 damage (save ends). If you have combat advantage against the target, it is also dazed (save ends).

Ringing the Bell is a daily power available to rangers at the 19th level.[MP2:42]