Hey fellow planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, it’s crucial to pay attention to the cards you include. Make sure to have a good balance of mana curve, including low-cost cards for early game and powerful cards for late game. Don’t forget to include removal spells to deal with your opponent’s threats and card draw spells to maintain your hand size. Lastly, always consider the synergy between your cards to create powerful combos that can turn the tide of the game in your favor. Happy deck-building!