Hey fellow Planeswalkers! When building a deck in Magic: The Gathering Arena, remember to focus on a cohesive strategy. Choose cards that work well together and support your game plan. Make sure to have a good balance of creatures, spells, and lands to ensure you can play your cards consistently. Don’t forget to include some removal spells and card draw to handle threats and maintain card advantage. And always playtest your deck to fine-tune it before taking it into ranked matches. Happy deck building!