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Hide from the light
rogue utility 22

Daily ✦ martial

Prerequisite: Stealth trained

Effect: you must already be hidden to use this power. You are invisible until the end of the encounter or until you end the effect by moving more than 2 squares in a turn or by making any attack other than a basic attack or an at-will attack.[PH:125]

Hide from the light is a daily power available to rogues at 22nd level.