Act of Authority is a new "Magic: The Gathering" card featured in the "Eternal Bargain" deck from "Commander (2013 Edition)." This powerful rare white enchantment bounce around the battlefield swapping controllers like Witch Hunt, destroying your opponent's resources and giving you card advantage.
Act of Authority - 1WW
When Act of Authority enters the battlefield, you may exile target artifact or enchantment.
At the beginning of your upkeep, you may exile target artifact or enchantment. If you do, its controller gains control of Act of Authority.
Unlike Oblivion Ring or Detention Sphere, the permanent you exile with Act of Authority won't come back into the battlefield if Act of Authority leaves play. You can choose to either sit on Act of Authority waiting for a particularly nasty threat or use it again right away during your next upkeep, in which case the controller of the permanent will gain control of it. Act of Authority is always at least a two-for-one or more if you don't control any other valid targets for your rivals to exile.
One way to mitigate Act of Authority's potential drawback of being used against you is to simply not play with many artifacts or enchantments in your deck. If you do then make sure they're ones that are indestructible, can't be targeted because they have shroud or hexproof, or have an "enters the battlefield" or "leaves the battlefield" ability that'll benefit you.
How will you use Act of Authority?
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