u/Crazy_Modee

"Journey into Nyx featured hero equipment cards. During the prerelease, players had the opportunity to win three mystical components, represented by reward stickers. These in turn gave access to an "enhancement sticker" which could be used to upgrade the hero equipment card, thus forging one the most powerful weapons on Theros: a customized Godslayer."

Any idea where I can buy those enhancement stickers?