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Shielding smite
paladin attack 1

Target: one creature

Attack: Charisma vs. AC

Hit: "2[W] + Charisma modifier damage."

Effect: "Until the end of your next turn, one ally within 5 squares of you gains a power bonus to AC equal to your Wisdom modifier."[PH:92]

Shielding smite is an encounter power available to paladins at 1st level.