Appearing in over 62,000 decks, according to EDHREC, the only thing stopping this card from being a true staple is its price point
(2024-02-02) Because face-down creatures don't have a name, they can't have the same name as any other creature, even another face-down creature
Poison is particularly effective when stacked with other effects , like Burn

Aberrant Ainok Survivalist Capashen Unicorn Cathar Commando Caustic Caterpillar Coliseum Behemoth Conclave Naturalists Devout Witness Flaxen Intruder Foundation Breaker Frenzied Trapbreaker Gemrazer Gemrazer Harmonic Sliver Hivespine Wolverine Hopeful Initiate Indrik Stomphowler Inspired Insurgent Knight of Autumn Kogla, the Titan Ape Kor Sanctifiers Leatherhead, Swamp Stalker Migloz, Maze Crusher Mockery of Nature Nantuko Vigilante Nettle Guard Nullmage Advocate Nullmage Shepherd Outland Liberator Qasali Pridemage Qasali Slingers Rambunctious Mutt Ravenous Sailback Reclamation Sage Reliquary Monk Rust Scarab Scion of Calamity Scrapshooter Shattered Acolyte Silverback Elder Steelbane Hydra Steelbane Hydra Stormkeld Vanguard Sunder Shaman Sylvok Replica Thrashing Brontodon Titan of Industry Tranquil Frillback Trygon Predator Undergrowth Leopard Vengeful Creeper Viridian Zealot Voracious Varmint Westfold Rider Wickerbough Elder Witch Enchanter Zacama, Primal Calamity

But the only way to truly understand the tension of the game is to play it