Simple, elegant, and an obvious evolution of an already established white mechanic. In general, I always welcome new build around cards. Although, I wouldn't have minded if Sudden Disappearance was an instant instead of a sorcery, but I guess you can't have everything.
It's also important to note the single white mana in the casting cost. Cards that fit so solidly in their color wheel, pie slice are normally double colored.
"Enters the battlefield" and "leaves the battlefield" effects are the name of the game when it comes building around this card. And since that is such a wide range of potential cards to include in a deck, let's set some self-imposed restrictions:
- The deck can only include cards from Innistrad & Dark Ascension
- The deck must feature both creatures and non-creature permanents
First we start with a handful of powerful white creatures that have "enters the battlefield" effects: Seance deck, but I'm not too sure how well it would work out or if it's needed at all.