Hey, fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, I always start by defining a clear win condition. Whether it’s overwhelming with creatures, controlling the board, or burning the opponent’s face, having a focused strategy is key. Don’t forget to include a good balance of card draw, removal, and threats in your deck to handle different situations. And always playtest your deck to fine-tune it – sometimes a small tweak can make a huge difference in your win rate. Keep shuffling those cards and may your opening hands always be favorable!