Here are also the final changes that Valve made to Artifact Classic.

• The game is free for everyone to play.
• All players get every card for free. You will no longer be able to buy card packs.
• Paid players’ existing cards have been converted into special Collector’s Edition versions, which will remain marketable. Marketplace integration has been removed from the game.
• Paid event tickets have been removed.
• Customers who paid for the game will still earn packs of Collector’s Edition cards for playing; players who got the game for free will not.

You can download and start playing Artifact from its official Steam store page.