Kyllä vain, koska muuten nämä tuplasleevatut yksilöt erottuvat pakasta.
Kuten Rancid- tuossa vastasikin, myös kortin paksuus toimii erottelevana tekijänä ja kaikki kortit tulee sleevata samaan tapaan (ja myös samoin päin!). Kannattaa myös huomata sleevatessaan että sleevit tulevat ns. samasta erästä vaikka olisivatkin saman valmistajan samaa tuotetta. Välillä pakettien välillä on suuriakin värieroja ja voi vahingossa ajaa miinaan sleevaamalla non-landit yhdestä paketista ja ländit sitten toisesta huomatakseen että ne ovatkin eri sävyisiä.
Alla vielä MTR:stä sleeveihin liittyvät säännöt:
3.10 Sleeves
Players may use plastic card sleeves or other protective devices on cards. If a player chooses to use card sleeves, all sleeves must be identical and all cards in his or her deck must be placed in the sleeves in an identical manner. If the sleeves feature holograms or other similar markings, cards must be inserted into the sleeves so these markings appear only on the faces of the cards.
During a match, a player may request that a judge inspect an opponents card sleeves. The judge may disallow the card sleeves if he or she believes they are marked, worn, or otherwise in a condition or of a design that interferes with shuffling or game play. In the interest of efficiency, the judge may choose to delay any change of sleeves until the end of the match.
Competitive and Professional REL tournaments impose additional restrictions on sleeves. Highly reflective backs are not allowed; sleeves with artwork on their backs are only acceptable if there is a single color at the sleeves edges; sleeves with holograms across some or all of the sleeve front or back are not allowed.
When using sleeves on double-faced cards, sleeves must be completely opaque. The Head Judge is the final authority on what sleeves are allowed.
3.11 Marked Cards
Players are responsible for ensuring that their cards and/or card sleeves are not marked during the course of the tournament. A card or sleeve is considered marked if it bears something that makes it possible to identify the card without seeing its face, including scratches, discoloration, and bends.
If a players cards are sleeved, the cards must be examined while in the sleeves to determine if they are marked. Players should use care when sleeving their decks and should randomize their decks prior to sleeving them to reduce the possibility of cards becoming marked with a pattern. Players should also keep in mind that cards or sleeves may become worn and potentially marked through play during the course of a tournament.