Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one key strategy is to focus on a coherent game plan. Whether you’re going for aggro, control, or combo, make sure every card in your deck contributes to that strategy. Also, don’t forget to include a good mix of card draw, removal, and win conditions to ensure you’re prepared for any situation. And always remember to playtest your deck to fine-tune it for optimal performance. Happy brewing!