This is because proxy cards can break the game's rules and go against fair use
While it isnt quite as crazy, Displacer Kitten almost gives me fixed Paradox Engine vibes
PRODUCT HIGHLIGHTS Lorcana's 3rd set Into the Inklands
Advanced Search Sets Random Syntax Artifact Mutation Aura Mutation Blightsower Thallid Bramble Elemental Brightcap Badger Brightcap Badger Death Mutation Deathbloom Thallid Deathspore Thallid Dreampod Druid Druidic Satchel Elvish Farmer Erhnam Djinn Avatar Ferrafor, Young Yew Fertile Imagination Fists of Ironwood Flash Foliage Fungal Infection Fungal Plots Fungal Rebirth Fungal Sprouting Ghave, Guru of Spores Golgari Germination Grand Ossuary Greener Pastures Infested Thrinax Jade Mage Jund Battlemage Korozda Guildmage Last Stand Life and Limb Morbid Bloom Mycologist Mycoloth Necrogenesis Nemata, Grove Guardian Nemata, Primeval Warden Night Soil Overgrown Armasaur Pallid Mycoderm Pollenbright Wings Psychotrope Thallid Rith's Charm Rith, the Awakener Roots of All Evil Saproling Burst Saproling Cluster Saproling Infestation Saproling Migration Saproling Symbiosis Sarpadian Empires, Vol

With big life cost cards such as Necropotence featuring less these days I think Ulcerate might have a shot in cube
Equipment and combat are some of the most accessible ways to play Magic, but also the ways with the arguably highest ceiling