Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one trick I swear by is to always start with a clear strategy in mind. Whether you want to go aggro, control, or combo, having a game plan from the get-go will help you make better card choices. Also, don’t forget to pay attention to your mana curve. Having a good balance of low-cost and high-cost cards will ensure you have plays at every stage of the game. And lastly, never underestimate the power of playtesting. Tinkering with your deck and fine-tuning it based on actual gameplay experience is key to success. Happy brewing!