Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, remember to have a clear game plan. Identify your win condition and build your deck around it. Make sure you have a good balance of creatures, spells, and other cards to support your strategy. Don’t forget to include some removal and card draw to handle different situations. And most importantly, playtest your deck to fine-tune it and see how it performs in different matchups. Keep brewing those decks and may your opening hands always be in your favor!