Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, always remember to have a good balance between mana curve, creatures, spells, and lands. Make sure to include some removal spells to deal with your opponent’s threats. Don’t forget to add cards that can draw you more cards to maintain card advantage. And most importantly, playtest your deck to see how it performs and make necessary adjustments. May your opening hand always have the perfect mix of lands and spells!