The one weakness is that opponents might be able to access some of the same spells as you if they also play a Dauthi Voidwalker, because it only looks for cards belonging to opponents that have a void counter on them
Psychic-type attacks can prevent an opponents ability from working and inflict status effects (like Confusion and Sleep), and help you draw additional cards

Advanced Search Sets Random Syntax Release date: 2019-04-11 Karn, the Great Creator Ugin, the Ineffable Ugin's Conjurant Ajani's Pridemate Battlefield Promotion Bond of Discipline Bulwark Giant Charmed Stray Defiant Strike Divine Arrow Enforcer Griffin Finale of Glory Gideon Blackblade Gideon's Sacrifice Gideon's Triumph God-Eternal Oketra Grateful Apparition Ignite the Beacon Ironclad Krovod Law-Rune Enforcer Loxodon Sergeant Makeshift Battalion Martyr for the Cause Parhelion II Pouncing Lynx Prison Realm Rally of Wings Ravnica at War Rising Populace Single Combat Sunblade Angel Teyo, the Shieldmage Teyo's Lightshield Tomik, Distinguished Advokist Topple the Statue Trusted Pegasus The Wanderer Wanderer's Strike War Screecher Ashiok's Skulker Augur of Bolas Aven Eternal Bond of Insight Callous Dismissal Commence the Endgame Contentious Plan Crush Dissent Erratic Visionary Eternal Skylord Fblthp, the Lost Finale of Revelation Flux Channeler God-Eternal Kefnet Jace, Wielder of Mysteries Jace's Triumph Kasmina, Enigmatic Mentor Kasmina's Transmutation Kiora's Dambreaker Lazotep Plating Naga Eternal Narset, Parter of Veils Narset's Reversal No Escape Relentless Advance Rescuer Sphinx Silent Submersible Sky Theater Strix Spark Double Spellkeeper Weird Stealth Mission Tamiyo's Epiphany Teferi's Time Twist

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It is fun and challenging to play, and it rewards you if you are good at thinking things out many turns ahead