Check before you craft
Paste a deck list, review card legality, and subtract the copies you own from your Arena wildcard estimate.
Paste full names or Arena exports with set/collector numbers. Main, Sideboard, and Commander sections are understood. This checks individual card legality, not complete tournament deck legality.
Build or edit a deck →Formats and rotation
Reprints can keep a card legal after its original set rotates. Check the card's current format status rather than assuming an older printing is unusable. This tool checks the synced status; it does not predict a future rotation or cover event-specific rules.
Arena renamed Explorer to Pioneer in May 2025. Read the format announcement. For current sets and rotation details, use Wizards' Standard page.
Arena's reprint crafting rules use the lowest Arena rarity by name. Search the catalog to inspect individual cards.