There are a few criteria that can be used to determine whether a Battle is good or not
But naturally, players will also want to know what the crystal cards actually do, and while there's always a chance of the rules changing before going to launch, these concepts seem pretty set in stone
And for anyone not familiar with the news of the London Mulligan, heres how it works (taken from the official WotC announcement): When you mulligan for the Nth time, you draw seven cards, then put N cards on the bottom of your library in any order.
This is also good for later in the game when you likely have more mana than cards to spend it on if youre running a lot of cheap spells
The Core Set helps you collect powerful cards while also helping explain some of the rules with further instructions printed on the card
These articles were updated and republished in 2015: The Great White Way Revisited , True Blue Revisited , In the Black Revisited Archived May 31, 2021, at the Wayback MachineSeeing Red Revisited , It's Not Easy Being Green Revisited