The number of Poison Counters they inflict varies from card to card.

Toxic: Cards with this ability add Poison Counters to a player when attacking them. If players get 10 'Poison Counters' (usually as a result of the 'Toxic' ability listed below), they instantly lose the game. Poison: A controversial mechanic returns for Phyrexia: All Will Be One. While the set's eerie theme helps it stand out, the addition of Poison, Toxic, and Corrupted effects give the cards their distinct flavor. New gameplay in Phyrexia: All Will Be One It also adds the 'Toxic' and 'Corrupted' effects. In terms of gameplay, Phyrexia: All Will Be One stands out because it reintroduces Poison to the game. Think of them like a fantasy version of Star Trek's Borg. They've been part of the franchise for decades and want to convert (or 'Compleat') everything into biomechanical hybrids that exist to serve Phyrexia. This is the first Magic: The Gathering set of 2023, and it revolves around the franchise's long-term villains - the robotic Phyrexians. (Image credit: Wizards of the Coast) What is Phyrexia: All Will Be One?

Upcoming mtg card sets