Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always start with a clear strategy in mind. Whether you prefer aggro, control, or combo decks, make sure your cards work towards that goal. Don’t forget to balance your mana curve to ensure you have plays at every stage of the game. And always remember to playtest your deck to fine-tune it for maximum efficiency. Good luck and may your opening hand always be full of power!