Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always remember to maintain a balanced mana curve. Having a good mix of low-cost and high-cost cards ensures you have options at every stage of the game. Also, make sure your deck has a clear win condition. Whether it’s through aggro, control, or combo, knowing how you plan to win will help you make better card choices. And don’t forget to playtest your deck regularly to fine-tune it for maximum efficiency on the battlefield! Good luck and may your opening hand be ever in your favor!