Pirion's Shroud (4e Power)

Pirion's Shroud	Warmage Utility 6
You shroud yourself in arcane energy, becoming nigh indiscernible from your surroundings.
Daily  Arcane, Illusion
Standard Action	Personal
Effect: Until the end of the encounter, you gain a power bonus to your AC and Reflex defense equal to your Wisdom modifier and enemies 3 or more squares away from you cannot sense you.