Hey fellow planeswalkers! When it comes to building a solid deck on Magic: The Gathering Arena, remember to maintain a good balance between mana curve, card advantage, and synergy. Make sure your deck has a clear win condition and focus on cards that support that strategy. Don’t forget to include some removal spells and ways to deal with different types of threats. And most importantly, playtest your deck to see how it performs and make necessary adjustments. Happy brewing!