Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one key strategy is to focus on synergy between your cards. Make sure your cards work well together and have a clear game plan in mind. Don’t forget to include a good balance of creatures, spells, and lands in your deck. And always playtest your deck to see how it performs in different matchups. Good luck and may your opening hand always have the perfect curve!