Magic: The Gathering’s Marvel Super Heroes set brings back poison counters

Head designer Mark Rosewater has confirmed at least one new card interacts with poison counters

As is the case with nearly every new Magic: The Gathering set these days, head designer Mark Rosewater has taken to his Tumblr blog Blogatog to tease mechanics from Marvel Super Heroes before official previews begin. Among a bunch of cryptic hints,Rosewater confirmed the return of an infamous Magic mechanics — and it’s one that already feels like the most expensive Ward cost ever.

In the May 26 post, Rosewater provided dozens of teasers from the new set. One simply reads “Ward – Get five poison counters.” Ward is a triggered keyword ability introduced in 2021’s Strixhaven: School of Mages set, simulating a magic-user having cast a persistent magical shield. Whenever an opponent targets a permanent with Ward with a spell or ability, it is countered unless they pay the Ward cost. Often, the Ward cost is just additional mana, yet here, the opponent would get five poison counters.

That strikes me as borderline overpowered. Poison counters are an older mechanic introduced in 1994’s Legends set. They’re typically associated with black and green cards, though throughout the history of Magic they appear across all colors in some capacity. Unlike most counters, poison infects players rather than permanents, and once a player has 10 or more poison counters, they lose the game. Because the Ward cost in the Marvel Super Heroes set triggers five poison counters, that means the player essentially winds up half-dead.

During MagicCon: Las Vegas 2026 previews for the set, Rosewater described the Marvel Super Heroes set as “Avengers plus.” Rather than hyper-focus on just a core collection of characters, it seems like the set will feature a wide array of Marvel characters. Were I to wager a guess, this particularly toxic character could be either Radioactive Man or Viper. The former was a founding member of the Masters of Evil created to destroy the Avengers. He can control and emit deadly forms of radiation, so it makes sense that if attacked, he can simply emit a ton of radiation to poison opponents.

Looking at the history of poison counters in Magic, however, they’re more closely associated with creatures like scorpions and snakes. The first two cards to feature the ability were the Pit Scorpion creature and the Serpent Generator artifact that creates 1/1 snakes that inflict poison counters. In Marvel, Viper is often depicted as the leader of Hydra and a master poisoner, but in some iterations, she’s a full-on mutant that can secrete venom and even exhale toxic gas.

Poison counters have long been one of the most divisive mechanics in Magic history, precisely because they function differently than normal damage. Since they’re counters, proliferate can increase their number. And to date there are very few ways to remove poison counters. Cards like Price of Betrayal and Final Act can remove them from opponents, but only the Leeches card can remove them from any player. Unless you’re building a deck specifically to counter poison, you’re never going to include that card.

Rosewater has spent decades championing the mechanic. In a 2010 article about the return of poison in Scars of Mirrodin, he described bringing poison back as “the greatest quest I ever undertook as a designer.” Scars of Mirrodin also introduced a leveled-up version of poison with infect. Creatures with infect deal damage in the form of -1/-1 counters to creatures and poison counters to players. At one point, Rosewater wrote that poison “differed fundamentally from life in one important way — you couldn't get rid of it. Once you were poisoned, that poison would always be there.”

That permanence is exactly why poison remains so controversial among players. Some love poison because it creates an alternate win condition that can abruptly end games in unexpected ways. Others hate it for the exact same reason. During the development of Tempest in the late 1990s, Rosewater recalled that “the majority of R&D felt as if it didn't have a place in Magic.” Over the years, Rosewater has made it a personal quest to put more poison cards into the game.

This mysterious new card with poison on its ward, which is presumably a legendary creature, might just be the new poison Commander fans of the mechanic have been waiting for.