Hey fellow planeswalkers! When building your deck in Magic: The Gathering Arena, always remember to have a good balance of cards across different mana costs. This ensures you have plays for every turn of the game. Also, don’t forget to include removal spells and cards that can deal with various threats. And most importantly, playtest your deck against different matchups to fine-tune it for the best performance. Good luck and may your opening hand always have the perfect curve!