Hey fellow Planeswalkers, when it comes to deck building in Magic: The Gathering Arena, it’s all about finding the right balance between creatures, spells, and lands. Make sure to have a clear win condition in mind when selecting your cards and always keep your mana curve in check to ensure a smooth gameplay experience. Don’t forget to include some removal and card draw spells to handle any situation that comes your way. And most importantly, playtest your deck against different opponents to fine-tune it for maximum efficiency. Happy brewing!