Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always start with a strategy in mind. Whether you prefer aggro, control, or combo decks, make sure your cards work towards that goal. Remember to have a good mix of creatures, spells, and lands to ensure consistency in your draws. Don’t forget to include some removal and card draw to handle any situation. And most importantly, playtest your deck to fine-tune it before taking it into ranked matches. Good luck, and may your opening hand always have the perfect curve!