Quote Originally Posted by strangebloke View Post
Disintegrate? Negate it. Ancient white dragon breath attack? Negate it. Assassin hitting you from stealth for 200 damage? Negate it.
If the assassin is hitting you for 200 points of damage, presumably that means you're surprised. If you're surprised you don't get a reaction, which means you can't use Tomb of Levistus.