Preventing an enemy attack outright is always, always fantastic (unless we are talking Terrible to Behold). And while Feigned Voices has a little less flexibility than say Feint, it is still an effect that is always welcome, especially in the sometimes quite squishy Silvan archetype. And in modern Silvan decks, which are often essentially low-grade combo decks with Galadhrim Weaver and Host of Galadhrim, this can be played and recycled every round, creating a very potent lock on enemies quite early on in the game. If you play Silvans, this will help you out a great deal in all likelihood.
Rating: 8/10
Decks of mine using Feigned Voices