57mm x 89mm card sleeves Mayday Games USA Chimera – 100 Pack, 57.5 89 mm, Super Clear 40 Micron Polypropylene, Acid-Free, PVC-Free – MDG-7044 : Toys & Games Most Standard sleeves are 40 microns thick Sleeve Kings Premium: Standard American

Like other Master Duel events, competing in matches earn players medals that can be spent on cosmetics such as player icons and names, mates that join you on the battlefield during duels and alternate card protectors and duel fields

Wizards felt that they just couldn't make a large set without it, putting it on the same level as Counterspell and Swords to Plowshares

I never used those but have found the color-coded ones to be quite helpful indeed

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