Hey fellow Planeswalkers! When it comes to building a solid deck in Magic: The Gathering Arena, I always start by choosing a theme or strategy I want to focus on. Whether it’s aggro, control, or combo, having a clear game plan is key. Then, I make sure to have a good mana curve to ensure I have plays at every stage of the game. Don’t forget to include some removal and card draw to maintain board control and keep your hand full. Lastly, playtest your deck against different archetypes to see how it performs and make adjustments accordingly. Happy brewing!