Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, it’s important to have a clear strategy in mind. Start by choosing a win condition and then build your deck around it. Don’t forget to have a good balance between spells, creatures, and lands. Playtest your deck against different opponents to see how it performs in various matchups. And always be open to tweaking and refining your deck based on your playtesting results. Happy deck building!