Rotation, Explained: What Core Legal Means

Sooner or later a deck you built in good faith picks up a quiet gray Rotated badge while the list itself sits untouched. Rotation is the schedule by which older Lorcana sets leave the Core tournament format, and once you see how the window works, the badge stops being a surprise and becomes something you can plan around.

What rotation is

Core is the format nearly every sanctioned Lorcana event runs, and it draws from a window of recent sets instead of everything ever printed. When new sets release, the window slides forward, and eventually the oldest sets inside it fall out. Falling out is what players call rotating.

The schedule exists for the health of the game. A card pool that only ever grows rewards whoever has been buying the longest, and each new set has to compete with every card ever printed before it. A rotating pool keeps the field reachable for someone starting today, and it lets designers print interesting cards without checking them against a decade of combos first.

Rotation is not the whole game, though. Infinity is the other constructed format in our deck builder, and it accepts cards from every main set with no window at all. The only cards no tournament format accepts are promo and event exclusives, cards that only ever appeared in promotional products. Unless one of those gets a main-set reprint, it stays a casual card.

What is Core legal right now

Main Lorcana sets carry numbers, and the current Core window runs from set 9 through set 13. Set 9 is Fabled, the oldest set still legal and the edge the next rotation will push past. Set 13, Attack of the Vine!, is the newest. Cards printed only in the first eight sets have rotated out.

The word printed is doing work in that sentence. inkvault groups every printing of the same name and version together, and if any printing in the group sits inside the window, all of them are legal. Your original copy of a card that got reprinted in a current set is fine to sleeve up. The badge logic already accounts for this, so when a card does get flagged, it genuinely has no legal printing anywhere.

Two more gates sit on top of the window. A short ban list removes cards regardless of set; right now that means Fortisphere and the Toymaker version of Hiram Flaversham. And the promo exclusives mentioned above stay outside both formats until a main set picks them up.

One note on trust. We compute Core legality ourselves from set membership instead of passing along third-party flags, because the card data we sync from upstream still marked rotated sets as legal well after the last rotation. Every legality answer on this site is derived from the set window and refreshed on every catalog sync.

How the badges work

On /cards, the filter bar has a Format control with three options: All, Core, and Infinity. Set it to Core and the gallery shows only cards legal in the format today. Open any card and the print details include a Legal line. A current card reads Core Constructed, Infinity, while a rotated one lists only Infinity.

Decks surface it more visibly. Deck tiles on /decks, on the home page, and in your own deck list carry the Rotated badge whenever a list contains cards that have left Core. Hover over the badge and it spells the situation out: Contains cards that rotated out of Core.

The builder is where the flag becomes actionable. While you edit, a legality chip watches the list and reads Legal when everything checks out. When something is wrong, the chip counts the problems and lists each one by name, and a rotated card gets its own line saying it is not legal in Core. Every deck is also stamped with the set era it was built in each time you save, which lets deck discovery separate current lists from lists built for a meta that no longer exists.

What to do when your deck rotates

A rotated deck is a deck with a to-do list. Open it in the builder and the legality chip already names every card that needs replacing, and because the flags honor reprints, nothing on that list can be rescued by a different printing you already own. Each flagged card needs an in-Core substitute.

Finding the substitute starts with asking what job the card did, since most jobs a rotated card was doing are still being done by something inside the window. Our meta staples guide is the shortlist for that search, because it measures which cards public decks are actually running right now rather than which ones a forum remembers fondly. Browsing full lists on /decks in your ink pair shows how current builds fill the same slots, with daily pricing on every list so you can weigh each swap before buying.

Make the swaps one at a time and the deck never stops being playable. Keep the rotated cards too. They still play in Infinity and at any kitchen table, and if one of them is reprinted into a future set, it walks straight back into Core along with every copy you kept.

Rotation and buying decisions

The window turns buying into a timing question. A set bought at release stays legal for the full life of the window, while the oldest legal set has the least tournament time left no matter how good its cards are. Right now that oldest set is Fabled, which will be the first to leave whenever the window next moves. Older cards are still worth buying when the purchase is for a collection or for Infinity rather than for the next season of Core events.

If you are buying to play, the newest sets give your money the longest run, and the set hub at /sets shows what each set contains before you commit to boosters or singles. New players can sidestep the question entirely. The live budget decks on /start are built from the current Core sets, and the starter picks there come with upgrade paths built from cards inside the current window.

Rotation ends a card's tournament run, and that is all it ends. The card still plays everywhere the window does not reach, and the collectible ones keep their collector value on the shelf. When the gray badge shows up on one of your deck tiles, it is not a loss notice. It is a nudge that the format moved and your list is one editing session behind it.