Hey fellow Planeswalkers! When it comes to building a solid deck in Magic: The Gathering Arena, it’s crucial to pay attention to your card choices. Make sure to have a good balance of cards that serve different purposes – include some removal spells, card draw options, and of course, powerful creatures or win conditions. Don’t forget to consider your mana curve to ensure you have a good mix of low-cost and high-cost spells. And always keep refining your deck through playtesting to see what works best in different matchups. Happy brewing!