These are the standard Peasant Magic rules:
www.geocities.com/peasantmagic/rules.htm
Card rarity
Card rarities are listed on the Wizards of the Coast website, in text files for each expansion. If a card does not have a listed rarity, then it is not allowed in Peasant Magic Tournaments. In general, all card sets listed under Starter Sets, Limited-edition Expansion Sets, and Basic Sets on that page are allowed. From Special sets, only Unglued and Chronicles/Renaissance are generally allowed.
Cards from other Special sets (like World Championship decks or Vangaurd) are allowed if the card was issued is another set with a legal rarity (Common or Uncommon). However, players must use deck protectors if their decks contain cards with different backs.
Card issued with different rarity ratings
If a card is listed with two different rarities in two different editions, use the most common rating for calculating rarity. For example,
Wyluli Wolf is Rare in Fifth Edition, but Common in Arabian Nights. For Peasant Master tourneys,
Wyluli Wolf is Common.
Exceptions
Strip Mine is officially an uncommon card, even though it had a version that was rated as common. This is a change from the general rule to limit strip mines in tourneys because of power. This rule is in effect at GenCon and Origins during the 2003 tourney season.
Restricted / Banned cards
Cards that are restricted or banned in Type 1, Type 1.5, and other DCI constructed tournaments are allowed in Peasant Magic, with the following exceptions, up to four (4) copies permitted in a deck.
Peasant magic official banned list
The following cards are banned for purposes of peasant magic due to irrational expense and some amount of rule breakage. These cards are not permitted at tournaments using the "official" Peasant Magic rules as determined by the Peasant Council, but may be permitted in other peasant tournaments at the discretion of the head peasant (re: top judge). See tournament notifications for details on specific tourney rules.
Jeweled Bird Timmerian Fiends
Bronze Tablet Brain Freeze
Ali from Cairo Bazaar of Baghdad
Berserk Candelabra of Tawnos
Diamond Valley Juzam Djinn
Library Of Alexandria Mana Drain
Mishra’s Workshop