Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, always remember to maintain a good balance between creatures, spells, and lands. Consider your mana curve to ensure you have plays for every stage of the game. Also, don’t forget about card synergy – choose cards that work well together to increase your chances of victory. And lastly, don’t be afraid to tweak your deck based on your matchups and how the meta is evolving. Happy brewing!