Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always start with a clear strategy in mind. Focus on a specific win condition and choose cards that support that strategy. Don’t forget to maintain a good balance between creatures, spells, and lands in your deck. Playtest your deck often to see how it performs and make adjustments accordingly. And most importantly, have fun experimenting with different card combinations to keep your opponents on their toes! Good luck and may your opening hand always be full of powerful spells!