The 4th Edition Assassin class has a Level 6 Utility Power Called Vanish:
Encounter - Immediate Reaction
Personal
Keywords: Shadow, Teleportation
Trigger: You are hit by an attack.
Effect: You become invisible until the start of your next turn, and you teleport up to your speed.
My question is: does the assassin take damage from the attack that triggered Vanish? Or do they get to Vanish after a successful attack roll but before damage is dealt?
Interested to hear ruling interpretations on this.
Trigger: You take damage from an attack
to clarify this is in fact after the damage. The ability would be WAY too powerful if it allowed you to avoid damage and become invisible 1/enc. As a DM, I would probably rule against it avoiding damage even if it said it in clearer language, for balance issues. You'll find similar abilities that do actually let you avoid an attack as an Immediate Interrupt, but they let the enemy re-target a different creature with the attack, or force them to hit one of their allies (as a daily power). \$\endgroup\$