Those cards are considered to be "used to craft" that permanent as long as they remain exiled and the permanent remains on the battlefield, even if the permanent's controller changes or some of its characteristics change (because of a copy effect, for example.) If the materials required include multiple objects, you may exile some of them from among permanents you control and the rest from among cards in your graveyard
MAGICThe action, adventure, and spirit of Avatar: The Last Airbender awaken in the Magic: The Gathering collectible card game 46 AVATAR: THE LAST AIRBENDER THEMESRelive iconic scenes and team up with your favorite characters with Avatar: The Last Airbender-themed packs
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The token that a resolving copy of a permanent spell becomes isn't "created"
Available exclusively at Costco locations in the United States and the United Kingdom, this collector's bundle features a special edition promo card and 9-pocket portfolio as well as booster packs from the game's inaugural set, this collector's bundle features a special edition promo card and 9-pocket portfolio as well as booster packs from the game's inaugural set, The First Chapter making it a rare chance for fans to get their hands on cards from that set." The set includes: (1) special edition, Disney Villains-themed card portfolio featuring artwork of Disney's The Evil Queen, Gaston, Maleficent, Captain Hook, Ursula, and Scar
