Karn's Bastion
Karn's Bastion: Land, Edge of Eternities Commander. Tap: Add C. 4, Tap: Proliferate. Printings, market prices, rulings, and format legality on Mana Grove.
- Mana value
- 0
- Type
- Land
- Colour identity
- Colourless
- Rarity
- Rare
- Set
- Edge of Eternities Commander (EOC)
- Released
- 2025-08-01
- Collector number
- 163
- Artist
- Adam Paquette
- Keywords
- Proliferate
Build around this card with Grover
About Karn's Bastion
Karn's Bastion is a Magic: The Gathering card, a rare colourless land from Edge of Eternities Commander (EOC), a Commander product released in August 2025. It is collector number 163 in that set, with art by Adam Paquette. As a land, it has no mana cost. It has no colour identity. It is legal in Pioneer, Modern, Legacy, Vintage, Commander, Duel Commander, Oathbreaker, Brawl, Historic, Timeless, Gladiator and Penny Dreadful. It has been printed in 11 sets, from War of the Spark (2019) to Edge of Eternities Commander (2025). The latest aggregated market price for this printing is $3.52 (normal finish, as of 2026-10-23).
Card text
{T}: Add {C}.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
"I can't protect everyone here. But those I can, I will." -Karn
Market price
Latest aggregated market price for the normal finish of this printing: $3.52 (as of 2026-10-23).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Karn's Bastion by format. Formats in which it is not legal are not listed.
| Pioneer | Legal |
|---|---|
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Commander | Legal |
| Duel Commander | Legal |
| Oathbreaker | Legal |
| Brawl | Legal |
| Historic | Legal |
| Timeless | Legal |
| Gladiator | Legal |
| Penny Dreadful | Legal |
Other printings of Karn's Bastion
Karn's Bastion has been printed in 11 sets. The 12 most recent other printings are listed here, newest first, with the rarity and release year of each.
| Printing | Rarity | Year |
|---|---|---|
| Secret Lair Drop (SLD) #1751 | Rare | 2024 |
| Ravnica Remastered (RVR) #464 | Rare | 2024 |
| The Lost Caverns of Ixalan Commander (LCC) #339 | Rare | 2023 |
| Commander Masters (CMM) #1007 | Rare | 2023 |
| March of the Machine Commander (MOC) #409 | Rare | 2023 |
| Phyrexia: All Will Be One Commander (ONC) #156 | Rare | 2023 |
| New Capenna Commander (NCC) #410 | Rare | 2022 |
| Magic Online Promos (PRM) #72223 | Rare | 2019 |
| War of the Spark Promos (PWAR) #248 | Rare | 2019 |
| War of the Spark Promos (PWAR) #248p | Rare | 2019 |
| War of the Spark Promos (PWAR) #248s | Rare | 2019 |
| War of the Spark (WAR) #248 | Rare | 2019 |
Official rulings
Six official rulings apply to Karn's Bastion, newest first.
- 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 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.
- 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.
- An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.
- 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.
- 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.
Similar cards
Other land cards with no colour identity, ranked by how often they appear in Commander decks.