Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, I always start by identifying a clear win condition. Whether it’s overwhelming the opponent with creatures, controlling the board with spells, or even milling their deck, having a focused strategy is key. Make sure your deck has a good balance of cards to support your win condition, including removal, card draw, and mana ramp. Don’t forget to pay attention to your mana curve to ensure you have the right balance of early-game plays and late-game power. And always playtest your deck to see how it performs in different matchups. Good luck, and may your opening hand always have the perfect mana base!