Cosmic Spellfury

Paragon Tier
Prerequisite: 11th level, sorcerer, Cosmic Magic class feature
Benefit: Whenever you hit at least one enemy with a sorcerer at-will attack power, you gain a benefit based on your current phase in the cosmic cycle. This benefit applies after the attack is resolved.
Phase of the Sun: You can roll a saving throw.
Phase of the Moon: You gain concealment until the end of your next turn.
Phase of the Stars: You become insubstantial until the end of your next turn or until you are hit by an attack.

Published in Arcane Power, page(s) 130.