Pioneer—a new nonrotating format featuring cards from Return to Ravnica and forward
Pioneer is a constructed format and therefore adheres to the following constructed rules:
With the exception of basic lands (Plains, Island, Swamp, Mountain, and Forest), your combined deck and sideboard may not contain more than four of any individual card, counted by its English card title equivalent.
- Minimum of sixty cards
- No maximum deck size, as long as you can shuffle your deck unassisted
- Up to fifteen cards in your sideboard, if used