Девять карт силы в Magic: The Gathering

Set of nine cards in Magic: The Gathering, that were only printed early in the game's history
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In Magic: The Gathering, Power Nine is a set of nine cards that were printed in the game's early core sets, consisting of Black Lotus, Ancestral Recall, Time Walk, Mox Pearl, Mox Sapphire, Mox Jet, Mox Ruby, Mox Emerald, and Timetwister. These nine cards were printed in the first sets of Magic: The Gathering, starting in 1993. They are considered among the most powerful cards in the game. Owing to their power, they were banned from being played in most competitive settings. The cards were added to Magic: The Gathering Arena in September 2022 with the introduction of the Alchemy: Dominaria United expansion set.

Although the modern term for these cards is Power Nine, other terms existed in the early days of the game. A tournament in New York advertised a grand prize of either "The Big 10" cards or $1000; the cards in The Big 10 were the Power Nine cards and Chaos Orb. During playtesting before the release of the Alpha edition, the Power Nine were deemed to be powerful cards whose scarcity would ensure the cards would not overpower games, but as print runs increased for each set the design team ultimately decided to remove the cards for the Revised Edition release.

The "Black Lotus" card can be played at zero cost, and it grants three mana (the game's primary resource) when sacrificed (discarded from play). In Magic a player can have up to four cards of the same name in a deck. As such, playing this card gave a considerable advantage in the early stages of the game. An artist proof card has a white back and are likely more scarce than released versions. Black Lotus is usually considered by collectors to be the most valuable non promotional Magic card due to its limited print and limited distribution. In 2022, Post Malone paid $800,000 for an artist's proof signed by artist Christopher Rush. The card's standing in the Magic: the Gathering community is evinced by the creation of the Magic: The Gathering Players Tour, which was originally established as the Black Lotus Pro Tour and first contested in February 1996 in New York City. The art for the card was created by Christopher Rush.

The tournament system had by 1995 become dominated by decks using the Power Nine, all of which had increased in price on the secondary market to such an extent that they were unaffordable by most players. In a Tumblr post in September 2021, Mark Rosewater stated that the company's approach to the Reserve List was "not going to change".