Cankerbloom: Creature - Phyrexian Fungus, Phyrexia: All Will Be One. 1, Sacrifice this creature: Choose one - • Destroy target artifact. On Mana Grove.
Cankerbloom is a Magic: The Gathering card, an uncommon green creature from Phyrexia: All Will Be One (ONE), an expansion set released in February 2023. It is collector number 161 in that set, with art by Nicholas Gregory. It costs {1}{G} (one generic and one green mana) to cast, for a mana value of 2. It is a 3/2 creature. Its colour identity is green. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless and Gladiator. It has been printed in 2 sets, from The List (2020) to Phyrexia: All Will Be One (2023). The latest aggregated market price for this printing is $0.50 (normal finish, as of 2026-11-02).
Card text
{1}, Sacrifice this creature: Choose one -
• Destroy target artifact.
• Destroy target enchantment.
• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Market price
Latest aggregated market price for the normal finish of this printing: $0.50 (as of 2026-11-02).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Cankerbloom by format. Formats in which it is not legal are not listed.
Cankerbloom has been printed in 2 sets. The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
The List (PLST) #ONE-161
Uncommon
2026
Phyrexia: All Will Be One (ONE) #294
Uncommon
2023
Phyrexia: All Will Be One (ONE) #451
Uncommon
2023
Official rulings
Six official rulings apply to Cankerbloom, newest first.
You don't have to choose every permanent or player that has a counter, only the ones you want to add another counter to. Since "any number" includes zero, you don't have to choose any permanents at all, and you don't have to choose any players at all.
Players can respond to a spell or ability whose effect includes proliferating. Once that spell or ability starts to resolve, however, and its controller chooses which permanents and players will get new counters, it's too late for anyone to respond.
To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents. You can choose any player who has a counter, including opponents. You can't choose cards in any zone other than the battlefield, even if they have counters on them.
If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has. You can't have it get just one kind of counter it already has and not the others.
An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.
If a permanent ever has both +1/+1 counters and -1/-1 counters on it at the same time, they're removed in pairs as a state-based action so that the permanent has only one of those kinds of counters on it.
Similar cards
Other creature cards with a green colour identity, ranked by how often they appear in Commander decks.