However, in most cases, a 40-card deck will provide more consistency in drawing your best cards, and I would prefer that over a diluted 60-card configuration
Most Expensive Cards: Beta Beta artist-proof Black Lotus
This makes all of your Rats much better in combat, forcing your opponents to trade their creatures if they want to block a Rat, which will then give you more Rat tokens as another creature dies.
If youre the monarch, instead you may put a creature or land card from your hand onto the battlefield
Ten gates were released with that Magic set, one for each of the 10 Ravnican guilds (Izzet Guildgate, Orzhov Guildgate, and Simic Guildgate, and so on for each color pair), each of which enters the battlefield tapped and taps for 1 mana of either of the guild's colors