mtg ajani commander deck Steadfast (Commander Masters) where X is your life total. Can this card be used

In fact, you can find copies from Revised Edition for as little as $20

As in level up your MTG knowledge, specifically about the level up mechanic

Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Draft Booster Box Publisher: Wizards of the Coast Item Code: WOCD1003 Releases June 10, 2022 Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Set Booster Box Publisher: Wizards of the Coast Item Code: WOCD1005 Releases June 10, 2022 Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Prerelease Pack Publisher: Wizards of the Coast Item Code: WOCD1009 Releases June 3, 2022 Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Bundle Publisher: Wizards of the Coast Item Code: WOCD1008 Releases June 10, 2022 Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Collector Booster Box Publisher: Wizards of the Coast Item Code: WOCD1006 Releases June 10, 2022 Magic: The Gathering: Commander Legends Dungeons & Dragons: Battle for Baldurs Gate Commander Deck Display Publisher: Wizards of the Coast Item Code: WOCD1007 Releases June 10, 2022 4 decks total

For more on the number of cards in different formats, see How Many Cards in an MTG deck