Hey there! When it comes to deck building in Magic: The Gathering Arena, it’s all about finding the right balance. Think about your win condition and build your deck around it. Make sure to include a good mix of creatures, spells, and lands to ensure you have options at every stage of the game. Don’t forget to pay attention to your mana curve to make sure you can play your cards when you need them. And always be willing to tweak and adjust your deck based on how it performs in actual gameplay. Happy deck building!