Hey fellow Planeswalkers! When building your deck in Magic: The Gathering Arena, always remember to include a good mix of cards. Make sure you have a good balance of creatures, spells, and lands to ensure you can cast your spells consistently. Don’t forget to include some versatile cards that can help you in different situations. And of course, always pay attention to your mana curve to make sure you can play your cards on time. Happy deck-building!