Aura of Silence
Enchantment
Artifact and enchantment spells your opponents cast cost 
more to cast.
Sacrifice this enchantment: Destroy target artifact or enchantment.
Not all silences are easily broken.
D. Alexander Gregory
Commander 2015 (C15)
• #60Rulings
Aura of Silence affects all opponents in a multiplayer game.
(wotc • 2004-10-04)
Rulings
Aura of Silence affects all opponents in a multiplayer game.
(wotc • 2004-10-04)