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 all your cards work towards that goal. Don’t forget to maintain a good balance between creatures, spells, and lands. Test your deck against different archetypes to see how it performs and make adjustments accordingly. And most importantly, have fun experimenting with new cards and strategies to keep the game fresh and exciting! Good luck out there on the battlefield!