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I'm a starting player, so I'll be getting the Fate Reforged Clash Pack coming next week to hopefully get playing into Standard. I get this clash pack can be made into a BG Dredge deck, which seems nice for starting a deck but I also noticed most of these cards are from Theros, which comes out of rotation soon, also the logo in these cards is different, also different from Khans of Tarkir or Fate Reforged logos.
So my question is if where are this cards found in the standard rotation, and when would they go out. Thanks.