Hey fellow Magic players! When it comes to deck-building in MTG Arena, I always start by picking a theme or strategy I want to focus on. Whether it’s aggro, control, or combo, having a clear game plan is key. Make sure to include a good balance of creatures, spells, and lands in your deck. Don’t forget to add some removal and card draw to keep your options open. And lastly, always playtest your deck to see how it performs and make adjustments accordingly. Happy brewing!