To begin your journey youll want a starter deck, which should cost $16.99
Not only that, but its in-game legality didn't raise concerns, and the fact that it was very expensive was fine considering this and also the fact that it was a premium set, meaning it had very strong and valuable cards that in turn increased the value of each pack
The cards are mostly from the new Wilds Unknown set (set 12), with some older cards from sets 9 to 11
If Bruse Tarl and Kraum are your commanders, your deck may contain cards with red, white, and/or blue in their color identity, but not cards with green or black
Nimbus Swimmer You can certainly pick a worse leviathan than Nimbus Swimmer
For example, if you attack with a 4/6 Wizard with trample and it's blocked by a 1/1 creature, you can assign 1 damage to the blocker and 3 damage to the defending player