Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one key tip is to focus on a clear win condition. Whether it’s overwhelming your opponent with creatures, pulling off a powerful combo, or outlasting them with control, make sure your deck is built around achieving that win condition efficiently. Don’t forget to balance your deck with the right mix of creatures, spells, and lands to ensure consistency. And always playtest your deck to fine-tune it before taking it into ranked matches! Good luck, and may your opening hand always be full of land and spells!