mtg modern legal cards Deck Somebody explain to me why

The biggest downside of the card is that its slightly hard to cast, but between Ancient Ziggurat, Aether Vial, Noble Hierarch, and just naming Wizard with Cavern of Souls / Unclaimed Territory, Ive found that downside to be manageable

Summary Build a powerful energy-themed deck with legendary creatures like Rex, Cyber-Hound, Atraxa, and Liberty Prime, for game-winning combos

The New Three-Year Rotation Cycle The first step of Wizards plan to revitalize Standard is to extend the lifecycle of all cards in Standard by one year by adding a year to the traditional two-year rotation cycle

Everything about this card is just awful, which is what makes it so good

But they did keep them around as a teaching tool