Hey fellow Planeswalkers! When it comes to deck building in Magic: The Gathering Arena, I always start by identifying a win condition. Whether it’s aggro, control, or combo, having a clear win condition helps shape the rest of your deck. Don’t forget to include a good balance of cards for early game, mid game, and late game. And always playtest your deck to see how it performs against different archetypes. Remember, adaptability is key in the ever-changing meta of MTG Arena! Good luck and may your opening hand always be strong!