Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one trick I always keep in mind is to maintain a good balance between mana sources and spells. A common mistake is having too many high-cost cards, which can lead to getting mana flooded early on.

Another useful trick is to focus on a specific strategy or theme for your deck. Whether it’s aggro, control, or combo, having a clear game plan will help you make better card choices and synergize your deck effectively.

Lastly, don’t forget to regularly tweak and test your deck. The meta is always evolving, so adapting your deck to counter popular strategies can give you a competitive edge. Keep these tricks in mind, and may your opening hand always have the perfect curve!