Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, one strategy I always keep in mind is synergy. Make sure your cards work well together and have a clear game plan. Don’t forget to have a good balance between creatures, spells, and lands. Also, always consider the meta and adjust your deck accordingly. Lastly, playtest your deck to see how it performs and make necessary tweaks. Good luck, and may your opening hand always have the perfect curve!