The perfect amount of land for your deck depends on a few factors
Suspicious Stowaway / Seafaring Werewolf The lone blue creature among werewolves, Suspicious Stowaway by itself is just a nice evasive value creature
Think Twice is the poor control mans universal replacement for Thirst for Knowledge when it has insufficient artifacts
Most, like Necrotic Wound and Drown in Filth, are removal
x2 Spell Snare Sorcery (4) Boomerang Basics x2 Iroh's Demonstration x2 Land (22) Agna Qel'a x2 Island x6 Mountain x2 Riverpyre Verge x4 Spirebluff Canal x4 Steam Vents x4 Sideboard (15) Annul x2 Broadside Barrage Disdainful Stroke Flashfreeze x2 Quantum Riddler x2 Sear Slagstorm x2 Soul-Guide Lantern Spell Pierce Three Steps Ahead Wan Shi Tong, Librarian This is one of the most common decks to run into in MTG Arena right now, partially thanks to its good commons and uncommons, and its a very powerful and synergistic deck
For every land discarded, you get a Bat token