You need to spend your first few turns playing cards like Mickey Mouse, Detective, Gramma Tala, Storyteller, and the song One Jump Ahead in order to ramp up your inkwell faster than your opponent
The deck that did this most famously was Prosperous Bloom, refilling its mana and thinning its deck by combining Squandered Resources with Natural Balance or simply to boost its way to its first Cadaverous Bloom or Prosperity
Aside from my advice to run at least thirty-eight lands because hitting land drops is important
Lorcana Promo Cards Lorcana has its own Promo cards, which are versions of cards available in main sets
The enters-the-battlefield ability is also great at helping filter away lands in the late-game to mitigate flood, and can also allow you to cycle away cards that are poor in the matchup in Game 1s, like Thalia, Guardian of Thraben in the mirror match or Reflector Mages against other control decks