Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one tip I swear by is to always have a clear win condition in mind. Whether it’s through overwhelming your opponent with powerful creatures or executing a combo, make sure your deck is focused on achieving that win condition efficiently. Don’t forget to include some removal and card draw to ensure you can control the board and maintain resources. And most importantly, playtest your deck against a variety of opponents to fine-tune it for different matchups. Happy spell-slinging!