TL;DR: Land Tax can be treated like a cudgel, constantly searching for 3 basic lands, thinning your deck, and filling your graveyard
If youre just starting your Lorcana journey, I recommend reading my complete beginners guide, which covers how to play Lorcana, the rules, keywords, mechanics, and more
Use these strategically to respond to threats or create opportunities
Some examples: Swords to Plowshares, Teferis Protection, Chaos Warp, Great Train Heist (or other Spree cards, you pay extra costs but can go wild), Akromas Will, Deflecting Swat, Wear/Tear, and my personal favorite, Reprieve
[26] Gameplay [edit] Commander is a format where players construct 100-card decks, with each card (except basic lands) appearing no more than once