Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always start with a clear strategy in mind. Focus on a cohesive theme or win condition to guide your card choices. Don’t forget to maintain a good balance between spells, creatures, and lands to ensure consistency. Test your deck against different opponents to fine-tune it, and don’t be afraid to make adjustments based on how it performs. And most importantly, have fun brewing and experimenting with different cards and combos! May your opening hands be ever in your favor!