Purify the GraveutilityBudget$0.14Not a poison-removal spell, but it's a low-cost white graveyard interaction card that fits the same narrow utility slot in white decks looking for specialized answers.
Solemnityprotection$11.76This is one of white's best anti-poison cards, preventing poison counters from being placed entirely rather than removing them afterward.
Melira, Sylvok Outcastprotection$9.88A classic anti-poison effect that stops poison counters from being put on you, functionally covering the same problem from the opposite angle.
Repudiate // ReplicateutilityBudget$0.29Not a poison counter remover, but serves as a niche utility answer in the same kind of slot as situational silver-bullet interaction.
Platinum Emperionprotection$18.85While much more expensive, it completely blanks life-total swings and can help stabilize against the damage component that Leeches produces after removing poison.
Lich's MasteryprotectionBudget$0.61A build-around protection piece that heavily alters loss conditions, occupying a similar niche of unconventional survivability tech.
Phyrexian UnlifeprotectionBudget$0.46It doesn't remove poison counters, but it directly interacts with poison as an alternate loss condition and is a common anti-poison defensive card.
Stigma Lasherutility$2.91This is a hate card aimed at life gain rather than poison, but it fills a comparable narrow disruption role in aggressive red decks.