Radiant Blast (4e Feat)
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Radiant Blast [Heroic]
Your radiant burst power increases to a close burst 2, and the target before the attack gains vulnerable 5 to radiant damage.
Benefit: Your radiant burst power increases from a close burst 1 to a close burst 2, the damage type is also radiant, and before the attack the target becomes vulnerable to radiant damage 5 until the end of your next turn.