Alpha to Alliances Ante

Deck Construction Rules

Cards per deck: At least 60. No sideboards are allowed.
Allowed sets: Alpha, Beta, Arabian Nights, Antiquities, Legends, The Dark, Fallen Empires, Ice Age, Homelands, Alliances, and Harper Prism promotional cards.
Reprint rules: Every reprint that is Old Frame, uses the original art and is non-foil is allowed.

Contemporary rules and errata are followed, with a few exceptions:

Games are played for ante. When you lose a card, you must replace it with another one before the next game.
Mana burn is still in effect.

Chaos Orb: 1, Tap: Choose a nontoken permanent on the battlefield. If Chaos Orb is on the battlefield, flip Chaos Orb onto the battlefield from a height of at least one foot. If Chaos Orb turns over completely at least 360 degrees during the flip, and lands resting on the chosen permanent, destroy that permanent. Then destroy Chaos Orb.
(Note: because of how Chaos Orb is worded, with it being destroyed after a flip, it can still be Disenchanted or Shattered in response to the activation, which will nullify the ability to flip, since it is no longer on the battlefield. This is consistent with the wording of Chaos Orb not being sacrificed upon activation, as it probably would with modern templating. Also note that Chaos Orb chooses, but does not target.)
Falling Star: Choose any number of non-overlapping creatures on the battlefield. Flip Falling Star from at least a height of one foot. If Falling Star turns over completely at least 360 degrees during the flip, it deals 3 damage to each chosen creature it lands resting on. Any creatures damaged by Falling Star that are not destroyed become tapped.
(Note: Falling Star chooses upon resolution, but does not target.)
Ring of Ma’rûf: 5, Tap, Exile Ring of Ma’rûf: The next time you would draw a card this turn, instead choose a card you own from exile or from your sideboard, and put it into your hand.

Banned: No cards are banned.
Restricted: Amulet of Quoz, Ancestral Recall, Balance, Black Lotus, Braingeyser, Bronze Tablet, Channel, Chaos Orb, Contract from Below, Darkpact, Demonic Attorney, Demonic Consultation, Demonic Tutor, Jeweled Bird, Library of Alexandria, Mana Crypt, Mana Drain, Mind Twist, Mox Emerald, Mox Jet, Mox Pearl, Mox Ruby, Mox Sapphire, Rebirth, Recall, Regrowth, Sol Ring, Tempest Efreet, Time Vault, Time Walk, Timetwister, Timmerian Fiends, Wheel of Fortune.

You can find more information about this format on their website.