Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one important tip is to have a clear strategy in mind. Whether you’re aiming for a fast aggro deck or a control-heavy strategy, make sure all your card choices support your overall game plan. Don’t forget to keep your mana curve balanced to ensure you have plays at every stage of the game. And lastly, always playtest your deck to see how it performs and make adjustments accordingly. Happy brewing!