Hey fellow Planeswalkers! When it comes to deck-building in Magic: The Gathering Arena, it’s all about finding the right balance between spells, creatures, and lands. Start by defining your strategy – whether you want to go aggressive, control the board, or outvalue your opponent. Make sure to include a good mix of low-cost and high-cost cards to ensure a smooth curve. Don’t forget to add some removal spells and card draw to keep your options open. And always playtest your deck to fine-tune it. Happy brewing!