Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, always start with a clear strategy in mind. Whether you prefer aggro, control, or combo, focus on cards that synergize well with your game plan. Don’t forget to include a good mix of removal, card draw, and win conditions in your deck. And most importantly, playtest your deck against different archetypes to fine-tune it for the best results. Good luck, and may your opening hand always be in your favor!