White Playable Cards : In White, the only card I really imagine being truly unplayable is Makindi Stampede
It lets you cast artifacts straight from your graveyard, turning destroyed pieces into repeatable value
Anje Falkenrath counts for a ton here but also Asylum Visitor, Magus of the Wheel, Stromkirk Occultist, Bone Miser, Greven, Predator Captain, Ob Nixilis Reignited, Key to the City, Anje's Ravager 9 sources of "card advantage;" Big Game Hunter, Plaguecrafter, Nightshade Assassin, Meteor Golem, Mire in Misery, Chaos Warp, Fiery Temper, Murderous Compulsion, Violent Eruption, Dark Withering, The Eldest Reborn, Warstorm Surge, Overseer of the Damned, Ob Nixilis Reignited 14 targeted removal
Even a 12mm deviation, easily checked with a ruler, is a strong red flag
Razaketh, the Foulblooded If you want to play a Shadowborn Apostle deck, you could do it old school and run Razaketh in the command zone