Infect Snapdax, Apex of the Hunt | Illustration by Viktor Titov Commander (1) Planeswalker (2) Jeska, Thrice Reborn Vraska, Betrayal's Sting Creature (28) Cacophony Scamp Crawling Chorus Bilious Skulldweller Blightbelly Rat Plague Stinger Myr Convert Necropede Plague Myr Killian, Ink Duelist Grateful Apparition Kediss, Emberclaw Familiar Lost Leonin Ichorclaw Myr Phyrexian Crusader Ichor Rats Necropanther Whispering Specter Annex Sentry Porcuparrot Cubwarden Dirge Bat Everquill Phoenix Vulpikeet Flesh-Eater Imp Core Prowler Cavern Whisperer Mindleecher Chittering Harvester Instant (11) Whisper of the Dross Ephemerate Swords to Plowshares Tainted Strike Ride Down Leave Boros Charm Arcbond Volt Charge Deflecting Swat Vraska's Fall Sorcery (6) Drown in Ichor Ascend from Avernus Infectious Inquiry Caress of Phyrexia Chandra's Ignition Ruinous Ultimatum Enchantment (3) Land Tax Necrogen Communion Skrelv's Hive Artifact (12) Skullclamp Sol Ring Arcane Signet Boros Signet Rakdos Signet Contagion Clasp Fellwar Stone Swiftfoot Boots Coalition Relic Staff of Compleation Commander's Sphere God-Pharoah's Gift Land (37) Savai Triome Nomad Outpost Exotic Orchard Command Tower Path of Ancestry Fabled Passage Evolving Wilds Terramorphic Expanse Rogue's Passage Ash Barrens Myriad Landscape Temple of the False God Slayers' Stronghold Marsh Flats Brightclimb Pathway Shattered Sanctum Fetid Heath Luxury Suite Blood Crypt Haunted Ridge Needleverge Pathway Rugged Prairie Swamp x5 Plains x5 Mountain x5 Everyones fave

Corpse Knight is a 2/2 Zombie Knight that makes each opponent lose 1 life when another friendly creature enters the battlefield
The deck then adds a handful of efficient removal spells and dual lands to help with mana fixing
Their main appeal is giving countermagic to red, but 1 mana to destroy something like Hullbreaker Horror is great, too
The most obvious answer beyond that was seeing what rare or mythic rare you opened, or if you found that key uncommon or common for your deck
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