Card Plate Armor (5e Equipment)
From D&D Wiki
Card Plate Armor
|Cost||Armor Class (AC)||Strength||Stealth||Weight|
|Unbuyable||+2 AC||13||Disadvantage||1 lb.|
Card Plate Armor is unwearable by anyone or anything except Diamond Knights. If someone other than a Diamond Knight tries to don this armor, it immediately falls apart into assorted playing cards. It looks like a bunch of playing cards integrated into a piece of armor, though it offers certain creatures the same defense as Plate armor, its incredibly lightweight.