Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always remember to focus on a consistent mana curve. Having a good mix of low-cost and high-cost spells ensures you can play something impactful every turn. Also, don’t forget to include a good balance of creatures, removal spells, and card draw to handle various situations. And lastly, playtest your deck extensively to fine-tune it for different matchups. Keep brewing and may your opening hands always be mana-rich!